A and B are two taps which can fill a tank individually in 10 minutes and 20 minutes respectively. However, there is a leakage at the bottom which can empty a filled tank in 40 minutes. If the tank is empty initially, how much time will both the taps take to fill the tank (leakage is still there) ?

What is the average age of a family of five members, whose ages are 42, 49, 56, 63 and 35 years respectively?

Girish started a business investing Rs. 45,000. After 3 months, Vijay joined him with a capital of Rs. 60,000. After another 6 months, Ankush joined them with a capital of Rs. 90,000. At the end of the year, they made a profit of Rs. 16,500. What is Girish’s share of profit ?

If the area of a circle is 75.44 square cm then what is the circumference of the circle?

If 13 men can complete a piece of work in 36 days, then in how many days will 18 men complete the same work?

The sum of three consecutive even numbers is 252. What is the sum of the smallest and the largest numbers?