At present, the sum of the ages of A, B and C is 150 years, whereas 10 years ago, the ratio of their age was 5:4:3. Find the ratio of their ages 10 years hence.

The formula is a square of 35 with the multiple method.

From the peak of a hill which is 300m high, the angle of depression of two sides of a bridge lying on a ground are 45° and 30° (both ends of the bridge are on the same side of the hill). Then the length of the bridge is 

Study the following graph to answer these questions :
Percent profit earned by two companies A & B over the years.
Profit = Income – Expenditure

Total expenditure of Company A & B together in 2001 was Rs. 13.5 lakhs. What was the total income of the two companies (in Rs. lakh) in that year?

A train 200 m long running at 36 kmph takes 55 seconds to cross a bridge. Length of the bridge is

What approximate values should come in place of the question mark(?) in the following question?

One number is 50% less than X and another number is 20 percent less than X. What is the ratio of both the numbers?