The speed of a bus Excluding stoppages, is 80 kmph and including stoppages, it is 72 kmph. For how many minutes does the bus stop per hour?

The base of a right prism is a tringle with sides 20 cm, 21 cm and 29 cm. If its volume is 7560 cm³, then its lateral surface area ( in cm²) is:

Rs. 2,000 is invested at 10% p.a. on simple interest. If that interest is added to the principal after every 20 years, the amount will become Rs. 14,000 after

The Value of is closest to:

A certain sum is deposited for 4 years at a rate of 10% per annum on compound interest compounded annually. The difference between ihe interest at the end of 2 years and that at the end of 4 years is ₹5,082. Find the sum (in ₹).

An item costing Rs. 840 was sold by a shopkeeper at a gain of 10 % and it was again sold by the new buyer at a loss of 5 %. Find selling price of the item is: 

In a triangle ΔABC, the sides DE parallel to BC and AD = 6 cm, DB = 9 cm, AE = 8 cm, find the value of AC.

A alone can complete a work in 6 days and B alone can complete the same work in 8 days. In how many both A and B together can complete the same work ?