Question
P can do a piece of work in 15 days, Q can complete
double the work in 60 days and R can do the work in 40 days. If all of them together earn Rs. 3000, then find the money received by Q.Solution
Time taken by P = 15 days Time taken by Q = 30 days Time taken by R = 40 days Let the total work be 120 units. P’s one day work = 8 units Q’s one day work = 4 units R’s one day work = 3 units Amount received by Q = 3000 × (4/15) = Rs. 800
The ratio of present age of A to that of B is 4:3 and the ratio of present age of A to that of C is 4:5. The average present age of A, B and C is 24 yea...
A father is four times as old as his son. In 10 years, the father will be twice as old as his son. What is the son’s present age?
The ratio of the age of M after 3 years to the age of N after 2 years is 5:4. The sum of the ages of N and O after 6 years is 68 years. The age of O bef...
Four years ago, the ratio of ages of a brother and sister was 5:6 respectively. 3 years from now, the age of the sister will be twice that of the brothe...
Present average age of 4 friends: ‘A’, ‘B’, ‘C’ and ‘D’ is 30 years. If their ages are in the arithmetic progression in the same order a...
The average age of 26 smdents in a class is 15 years. If teacher's age is included in it, then the average will increase by one. What is the teacher's a...
Novita's current age is 37.5% greater than Suzuka's, with a difference of 15 years between their ages. Calculate the ratio of Novita's age to Suzuka's a...
- The total of ages of Nitin and Sumit at present is 60 years. Four years ago, the ratio of their ages was 6:7. Find the present age of Sumit.
A is younger than B by 3 years. If the ratio of A and B ages is 12:13 respectively, then find the age of A.
The sum of ages of 4 children born at the intervals of 3 years each is 38 years. Find out the age of the youngest child.
