Question
A and B are at present in the ratio 10:7. The ratio of A
after 30 years to B 9 years ago equals 5:1. If Cβs present age is 33β % less than (A+B) now, calculate Cβs current age.Solution
ATQ, Let present ages of A and B be 10x and 7x years. (10x + 30)/(7x - 9) = 5/1 β 10x + 30 = 35x - 45 β 25x = 75 β x = 3 Sum = 10x + 7x = 17x = 51 Therefore, C = (2/3) Γ 51 = 34 years
P and Q together can do a piece of work in 15 days, Q and R together can do it in 18 days. P starts the work and works on it for 5 days, then Q takes it...
15 boys can finish a task in 8 days while 3 men can finish the same task in 4 days. In how many days can 2 boys and 3 men together finish the task?
A can complete a piece of work in 12 days and B can complete the same work in 18 days. They work together for 4 days and then leave the remaining work ...
A and B do some work, the efficiency of A is 25% more than that of B. If B does a piece of work in 10 days more than A. Then find out in how much time b...
A and B individually can complete the work in 20 days and 30 days respectively. If the time taken by C alone to complete the work is 1.25 times the time...
βAβ alone can do some work in 10 days. βBβ and βCβ together can do the same work in 4 days. If βBβ is half as efficient as βAβ, then...
βDβ alone can finish a job in 50 days, while βDβ and βEβ together can complete it in 20 days. If βEβ worked alone for 22 days and then l...
βAβ is 50% more efficient than βBβ. βAβ and βBβ work together for 6 days after which βAβ is replaced by βCβ. βBβ and βCοΏ½...
- 24 men can complete _______% of the whole work in 12 days working 10 hours in a day. 30 men working 8 hours in a daycan complete 30% of the whole work in _...
- βAβ can complete a job in 36 days. βBβ takes 3 times as long as βAβ to finish the same job. If both work together, how much of the work will th...
Relevant for Exams:
