For the following questions answer them individually
A 200 m long train is running with a speed of 50 km/h. In what time will it pass a man who is running at 5 km/h in the direction opposite to that in which the train is going ?
P can do a piece of work in 10 days; B in 15 days. They work for 5 days. The rest of the work finished by R in 2 days. If they get ₹1,500 for the whole work, the daily wages of B and R are:
P and Q working separately can do a piece of work in 9 and 12 days respectively. If they work for a day alternately, P beginning, in how many days. the work will be completed ?
A and B can do a piece of work in 10 days. B and C together can do it in 15 days. If A is twice as good a workman as C. Find what time B alone can do it?
The average of ten numbers is 8. If each numbers is multiplied by 15, then average of the set of numbers is:
The average weight of 10 men is increased by 1.5 kg when one of them, who weighs 70 kg is replaced by a new man. The weight of the new man is:
A, B, C and D are four consecutive even numbers respectively and their average is 61. What is the product of A and D ?
In what ratio must water be mixed with milk to gain $$16\frac{2}{3}\%$$ on selling the mixture at cost price?
In how many ways can the letters of the word 'DETAIL' be arranged so that the vowels occupy only the odd positions ?