A. 12 days
B. 14 days
C. 16 days
D. 18 days
3 men does same work as 4 women in 43 days.
multiply 3 and 4 and 43 for a supposed amount of total work (516).
Now calculate how much work is done by 3 men in one day by dividing 516 by 43 (12). Then calculate one man work in one day by dividing 12 by 3 (4).
Same (12) amount of work is done by 4 women in one day. so one women does 12/4 (3) in one day.
now see there are 7 men and 5 women in the final team.
total amount of work in one day will be
7(4)+5(3) = 43
Now divide total work (516) by total work in one day (43) to get the answer (12)
3M*43 = total work ,which is equal to 4W*43 (Since efficiency *time =total work)
so equating both eqn
3M*43=4W*43
so we get efficiency ratio M:W =4:3
total work = 3*4*43 =516
total work/efficency =time
516/(7M+5W) =time
substituting efficiency ratio in the above eqn
516/(7*4 + 5*3) =12days
hope this helps..
12 is a right answer
How this question is solved ? Can anyone explain here ?
CORRECT ANS IS 12
3 men construct a wall in 43 days
So 3 men’s work in a day = 1/43 part
Hence 1 man’s work in day = 1/(43 x 3) part
Similarly 1 woman’s work in a day = 1/(43 x 4) part
7 men and 5 women’s work = 7 x 1/ 43 x 3 + 5 x 1/ 43 x 4 =( 7 x4 + 5 x 3)/43 x 3 x 4
= ( 28 +15)/ (43 x 12 ) = 43/(43 x 12) = 1/ 12 part
So 7 men and 5 women take 12 days to construct a wall .
3 men work in 43 days
So 3 men’s work in a day = 1/43 part
Hence 1 man’s work in day = 1/(43 x 3) part
Similarly 1 woman’s work in a day = 1/(43 x 4) part
7 men and 5 women’s work = 7 x 1/ 43 x 3 + 5 x 1/ 43 x 4 =( 7 x4 + 5 x 3)/43 x 3 x 4
= ( 28 +15)/ (43 x 12 ) = 43/(43 x 12) = 1/ 12 part
So 7 men and 5 women take 12 days to construct the wall.
3 men reap the field in 43 days
So 3 men’s work in a day = 1/43 part
Hence 1 man’s work in day = 1/(43 x 3) part
Similarly 1 woman’s work in a day = 1/(43 x 4) part
7 men and 5 women’s work = 7 x 1/ 43 x 3 + 5 x 1/ 43 x 4 =( 7 x4 + 5 x 3)/43 x 3 x 4
= ( 28 +15)/ (43 x 12 ) = 43/(43 x 12) = 1/ 12 part
So 7 men and 5 women take 12 days to reap the the field.
3 Men =43 days
1 Man = 129 days
1 Man in 1 day = 1/129 of the work
4 women = 43 days
1 woman = 172 days
1 woman in 1 day = 1/172 of the work
7 Men + 5 Women in 1 day = 7/129 + 5/172 = ( 28 + 15) /516 = 43/516 = 1/12
ANSWER 12 days
3 men construct the in 43 days
So 3 men’s work in a day = 1/43 part
Hence 1 man’s work in day = 1/(43 x 3) part
Similarly 1 woman’s work in a day = 1/(43 x 4) part
7 men and 5 women’s work = 7 x 1/ 43 x 3 + 5 x 1/ 43 x 4 =( 7 x4 + 5 x 3)/43 x 3 x 4
= ( 28 +15)/ (43 x 12 ) = 43/(43 x 12) = 1/ 12 part
So 7 men and 5 women take 12 days to construct the the all.
3 men = 4 women
1 man = (4/3) women ,
7 men + 5 women = (7×43+5)=433 women
M1 =4, D1 = 43, M2 = 43/2, D2 =?
and W1 = W2 = 1
According to the formula,
M1D1W2 = M2D2W1
4 x43x1=(43/3)xD2 x1
D2 = 3 x 4 = 12 days
3 men = 43 days
one day work for 3 men = 1/43
one day work for 1 man = 1/ 43*3
one day work for 4 women =1/43
one day work for 1 woman = 1/43*4
for 7 men and 5 women one day work = 7( 1/43*3) +5(1/43*4)
= 7/43*3+5/43*4
taking LCM and simplifying this results comes to be 1/12
that implies works will be done in 12 days not 16 please do correct it.
4 women=3 men
1 women=3/4men
5 women=3*5/4=15/4men
now 7men and 5 women=7+15/4=43/4
3 men complete the work=43
1 men complete that work=43*3
so now for 5 women and 7 men above see=43/4
43/4 can complete it=43*3/43/4=12
so the right answar is 12 days
My answer is 12
Please if any one know the solution of this qurstion …. Please let me know….
Wrong answer hai.12day lagtay hain
Kindly, give the solution for this question.
4 women multiply 43 days =14.33 multiply days? 4 days multiply 43 days devided 14.33 women=12.0022days
The chosen answer is wrong. Actual answer in option A (12 days)
How?
3 men does same work as 4 women in 43 days.
multiply 3 and 4 and 43 for a supposed amount of total work (516).
Now calculate how much work is done by 3 men in one day by dividing 516 by 43 (12). Then calculate one man work in one day by dividing 12 by 3 (4).
Same (12) amount of work is done by 4 women in one day. so one women does 12/4 (3) in one day.
now see there are 7 men and 5 women in the final team.
total amount of work in one day will be
7(4)+5(3) = 43
Now divide total work (516) by total work in one day (43) to get the answer (12)
Good luck
the answer is 12 days . 3 men or 4 women can plough the field in 43 days
3 men = 4 women
1 man = 43
women
7 man = 283
women
7 men and 5 women = 5+283
= 433
women
4 women can plough field in 43 days
So,
1 women can plough in = 43 × 4 days
Hence,
433
women can plough = 43×4×343
= 12 days
the answer is 12 days . 3 men or 4 women can plough the field in 43 days
3 men = 4 women
1 man = 43
women
7 man = 28/3
women
7 men and 5 women = 5+28/3
= 43/3
women
4 women can plough field in 43 days
So,
1 women can plough in = 43 × 4 days
Hence,
4/33 women can plough = (43×4×34)/3
= 12 days
Ans A is right, it took 12 days to construct the wall.
men women days
3/7 4/5 43
so by cross multiplication
7/3 + 5/4 +1/43
1/43= 7/3 + 4/5
1/43= 28 + 15/12
1/43= 43/12 = 1/12 or 12 days ans
It is 12 not 16
4 women = 3 men
1 women = 3/4 men.
5 women = (3 *5)/4 = 15/4 men.
7 men + 5 women = 7 + 15/4 = 43/4 men.
Now,
3 men can complete the work in 43 days.
1 men can complete it in = 43*3
43/4 men can complete = (43*3)/(43 /4) = (43 * 3 *4)/43 = 12 days.
Please correct the answer. the correct one is option A = 12 days
Ans is 12 days
16 is Wrong
3 men took 43 days so 1 man will take 43 x 3 = 129 days
4 women took 43 days so 1 woman will take 43 x 4 = 172 days
Taking LCM of 129 and 172 will give 516 (Total Work)
Divide 516 by 129 = 4 (Work done by 1 man per day)
Divide 516 by 172 = 3 (Work done by 1 woman per day)
7 men = 4 x 7 = 28 (per day)
5 women = 3 x 5 = 15 (per day)
Total work = 28 + 15 = 43 ( per day)
43 x 12 days = 516 (Total Work)
3men=4women
1man=4/3 woman
7men and 5women=(4/3*7+5)=43/3womens
Now 4*43/ 43/3=4*3*43/43
=12 is correct
the correct answer of this question is 12 not 16
12 is right answer
If 3 men do work =43 days
Then 1 man will do same work in =43×3=129 days
Same for women
1 woman will do same work in =43×4= 172days
Now
5men and 7 women will do a work with efficiency/day = 5(1/129)+7(1/172)
= (15+28)/516 =1/12
So days taken will be 12 days
So ur answer is wrong
3 men can complete it in 43 days, which means 1 man alone will take 3*43 days working at the rate of 1/(3*43) per day.
4 women can complete it in 43 days, which means 1 women alone will take 4*43 days working at the rate of 1/(3*43) per day
Now, 7 men and 5 women working together will work at the rate of 7*1/(3*43) + 5*1/(4*43) = 1/12 per day.
Therefore, it will take 12 days for 7 men and 5 women to get it done
4 women=3 men 1 women=3/4men 5 women=3*5/4=15/4men now 7men and 5 women=7+15/4=43/4 3 men complete the work=43 1 men complete that work=43*3 so now for 5 women and 7 men above see=43/4 43/4 can complete it=43*3/43/4=12 so the right answar is 12 days
O bhai kya ho gya ha sbko. The right answer is 14.74