Mathematics MCQs

Page No. 76

A tank can be filled by a pipe in 20 min. and by another pipe in 60 min. Both the pipes are kept open for 10 min. and then the first pipe is shut off. After this, the tank will be completely filled in__________?


a10 min


b20 min


c30 min


d40 min


View Answer 20 min

P, Q and R can do a work in 20, 30 and 60 days respectively. How many days does it need to complete the work if P does the work and he is assisted by Q and R on every third day?


a10 days


b14 days


c15 days


d9 days


View Answer 15 days

3 men and 7 women can complete a work in 10 days . But 4 men and 6 women need 8 days to complete the same work . In how many days will 10 women complete the same work?


a50


b30


c40


d13


View Answer 40

P takes twice as much time as Q or thrice as much time as R to finish a piece of work. They can finish the work in 2 days if work together. How much time will Q take to do the work alone?


a7


b8


c9


d6


View Answer 6

Assume that 20 cows and 40 goats can be kept for 10 days for Rs.460. If the cost of keeping 5 goats is the same as the cost of keeping 1 cow, what will be the cost for keeping 50 cows and 30 goats for 12 days?


aRs.1104


bRs.1000


cRs.934


dRs.1210


View Answer Rs.1104

If 6 men take 9 days to complete a work, how many men can complete the work in 3 days?


a2 men


b12 men


c9 men


d18 men


View Answer 18 men

If 10 workers can make 10 tables in 10 days, then how many days would it take for 5 workers to make 5 tables?


a1


b5


c10


d25


View Answer 10

If 6 men can make 10 sofas in 2 days, then 8 men can make 8 sofas in__________?


a1.8 days


b1.5 days


c1.2 days


d1 day


View Answer 1.2 days

If 3 men or 4 women can construct a wall in 43 days, then the number of days that 7 men and 5 women take to construct it is :


a12 days


b14 days


c16 days


d18 days


View Answer 16 days

A, B and C together earn Rs.150 per day while A and C together earn Rs.94 and B and C together earn Rs.76. The daily earning of C is:__________?


a10 Rs,


b15 Rs,


c20 Rs.


d25 Rs.


View Answer 20 Rs.

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