At what annual interest rate will a sum of money double in 8 years?
Balu said, "She is the daughter of my grandmother's only son". How is Balu related to that lady?
A clock shows 2 o'clock in the morning. Through how many degrees will the hour hand rotate when the clock shows 9 o'clock in the evening?
The average age of four children is 8 years. When the age of the father is included, the average age increases by 4 years. Find the age of the father.
A circle is inscribed in a square such that the circle touches all the sides of the square. Find the ratio between the area of the circle and the area of the square.
A reduction of 20% in the price of rice enables a person to buy 3.5 kg more rice for Rs. 385. The original price of rice is:
A walks from points Jammu to Delhi and at the same time B starts walking from Delhi to Jammu. After passing each other, they complete their journeys in 361 hours and 289 hours, respectively. Find the ratio of speed of A to that of B?
The dimensions of a room are 25 feet × 15 feet × 12 feet. What is the cost of whitewashing the four walls of the room at Rs. 5 per square foot if there is one door of dimensions 6 feet × 3 feet and three windows of dimensions 4 feet × 3 feet each?
On the independence day, bananas were be equally distributed among the children in a school so that each child would get two bananas. On the particular day 360 children were absent and as a result each child got two extra bananas. Find the actual number of children in the school?
Two pipes can fill an empty tank in 40 minutes and 60 minutes respectively. There is an outlet pipe C. If all the 3 pipes are opened simultaneously, the empty tank can be filled in 48 minutes. How much time will it take for pipe C alone to empty the full tank?