Two-fifth of one-third of three-seventh of a number is 15. What is 40% of that number?

Related Mcqs:

1. There are three numbers. 5/7th of the first number is equal to 48% of the second number. The second number is 1/9th of the third number. If the third number is 1125, then find 25% of the first number?

   A. 168
   B. 84
   C. 42
   D. 21
   E. None of these

2. There are two circles of different radii. The area of a square is 196 sq.cm, whose side is half the radius of the larger circle. The radius of the smaller circle is three-seventh that of the larger circle. What is the circumference of the smaller circle ?

   A. 12 π cm
   B. 16 π cm
   C. 24 π cm
   D. 32 π cm

3. Two pipes A and B can separately fill a cistern in 60 min and 75 min respectively. There is a third pipe in the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then the cistern is full in 50 min. In how much time, the third pipe alone can empty the cistern?

   A. 90 min
   B. 100 min
   C. 110 min
   D. 120 min

4. A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is?

   A. 6 hrs
   B. 10 hrs
   C. 15 hrs
   D. 30 hrs

5. Three persons invested Rs.9000 in a joint business. The second person invested Rs.1000 more than the first and the third Rs.1000 more than second. After two years, they gained Rs.5400. How much third person will get?

   A. Rs.2400
   B. Rs.3600
   C. Rs.2850
   D. Rs.2000

6. When 2 is added to half of one-third of one-fifth of a number, the result is one-fifteenth of the number. Find the number?

   A. 40
   B. 50
   C. 60
   D. 70
   E. None of these

7. H.C.F of 3240, 3600 and a third number is 36 and their L.C.M is 2⁴ * 3⁵ * 5² * 7². The third number is___________?

   A. 2² * 3⁵ * 7²
   B. 2² * 5³ * 7²
   C. 2⁵ * 5² * 7²
   D. 2³ * 3⁵ * 7²

8. Visitors to show were charged Rs.15 each on the first day. Rs.7.50 on the second day, Rs.2.50 on the third day and total attendance on the three days were in ratio 2:5:13 respectively. The average charge per person for the whole show is___________?

   A. Rs.3
   B. Rs.4.50
   C. Rs.5.00
   D. Rs.7.50

9. Two pipes A and B can fill a cistern in 20 and 30 minutes respectively, and a third pipe C can empty it in 40 minutes. How long will it take to fill the cistern if all the three are opened at the same time?

   A. 19 1/7 min
   B. 15 1/7 min
   C. 17 1/7 min
   D. 7 1/7 min

10. The sum of three numbers is 172. The ratio of the first and second numbers is 8:11. The ratio of the second and third is 5:7. Find the second number.

    A. 44
    B. 55
    C. 66
    D. 77