55 students get average marks of 55%.
so 55*50=2750
similarly 60*55=3300
& 60*45=2700
now total no of marks obtain by all students of three batches= 2750+3300+2700=8750/=
Total no of students= 55+60+45=160.
By dividing total marks on each student , we get average marks obtain by each student
so 8750/160 = 54.68
Basic Arithmetic Mcqs for the Prepration of FPSC Tests, PSC Tests, NTS Test. Important Arithmetic Aptitude Mcqs questions. Important Arithmetic Aptitude Mcqs questions. average, percentage, Ratio, etc. some of the most important sub categories are: Average, Percentage, Problem on Ages, Time and Distance, HCF and LCM, Logarithms, Discount, Interest, Ratio & Proportion, Decimal Fraction and other.
BASIC ARITHMETI MCQS
1.
Percentage
8.
Average
2.
Profit and Loss
9.
Time & Distance
3.
Discount
10.
Work-Time
4.
Stocks and Shares
11.
Men Food
5.
interest
12.
Height and Distance
6.
Odd Man Out and Series
13.
Volume and Surface Area
7.
Ratio
14.
Time and Work
IF YOU THINK THAT ABOVE POSTED MCQ IS WRONG.
PLEASE COMMENT BELOW WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION.
2 Comments to “If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is:”
solution short cut. ? any short way in which simple calculations r required. plz snd
55 students get average marks of 55%.
so 55*50=2750
similarly 60*55=3300
& 60*45=2700
now total no of marks obtain by all students of three batches= 2750+3300+2700=8750/=
Total no of students= 55+60+45=160.
By dividing total marks on each student , we get average marks obtain by each student
so 8750/160=54.68
solution short cut. ? any short way in which simple calculations r required. plz snd
55 students get average marks of 55%.
so 55*50=2750
similarly 60*55=3300
& 60*45=2700
now total no of marks obtain by all students of three batches= 2750+3300+2700=8750/=
Total no of students= 55+60+45=160.
By dividing total marks on each student , we get average marks obtain by each student
so 8750/160=54.68