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

₹ 1,000 is invested at 5% per annum simple interest. If the interest is added to the Aprincipal after every 10 years, the amount will become 2,000 after

The sum of three consecutive numbers is 87. The middle number is : 

A can finish one-third of a work in 5 days, B can finish 2/5^th of the same work in 10 days and C can finish 75 % of the same work in 15 days. They work together for 6 days. The remaining work will be finished by B alone in:

If in a triangle the circumcentre, incentre, centroid and orthocentre are at the same place, then what will that triangle be like?

A man can row downstream at a speed of 15 km/h and upstream at 11 km/h. Find his speed in still water and the speed of the current, respectively. [Give both your answers in km/h]

The ratio of the sum of two numbers and their difference is 5:1. The ratio of the greater number to the smaller number is-

The LCM of two numbers is 864 and their HCF is 144. If one of the numbers is 288, the other number is: