1.
If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work?
2.
How many terms are there in 20, 25, 30 . . . . . . 140?
3.
shopkeeper earns a profit of 12% on selling a book at 10% discount on the printed price. The ratio of the cost price and the printed price of the book is:
4.
Ajit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average by 8 runs. His new average is:
5.
Find the simple interest on Rs. 5200 for 2 years at 6% per annum.