AFCAT- 3 Maths
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1. A school has enough food for 400 children for 12 days. How long will the food last if 80 more children join them?
2. At what rate of simple interest per annum an amount will be doubled in 10 years?
3. A person lost 10% when he sold goods at Rs.153. For how much should he sell them to gain 20%?
4. A candidate appearing for an examination has to secure 40% marks to pass paper I. But he secured only 40 marks and failed by 20 marks. What is the maximum mark for paper I?
5. A can type 10 pages in 5 minutes. B can type 5 pages in 10 minutes. Working together, how many pages can they type in 30 minutes?
6. Two trains of equal lengths take 10 seconds and 15 seconds respectively to cross a telegraph post. If the length of each train be 120 metres, in what time will they cross each other travelling in opposite direction?
7. When you reverse the digits of age of father, you will get the age of son. one year ago the age of father was twice that of son’s age. what are the current ages of father and son?
8. A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. The average speed for the first 320 km of the tour is
9. What is the sum of two consecutive even numbers, the difference of whose squares is 84?
10.Pipe A can fill a tank in 20 minutes and Pipe B in 30 mins and Pipe C can empty the same in 40 mins.If all of them work together, find the time taken to fill the tank?
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