At some rate of simple interest, A lent ₹ 6,000 to B for 2 years and ₹ 1,500 to C for 4 years and received ₹ 9,00 as interest from both of them together. The rate of interest per annum was

In a group of 35 people, 23 of them like coffee, 24 of them like tea and each person likes at least one of the drinks. How many like both? 

In 80 litres mixture of milk and water the ratio of amount of milk to that of amount of water is 7: 3. In order to make this ratio 2: 1, how many litres of water should be added?

Out of 20 boys, 6 are each of 1 m 15 cm height, 8 are of 1 m 10 cm and rest of 1 m 12 cm. The average height of all of them is

In the given question, two equations numbered l and II are given. Solve both the equations and mark the appropriate answer.

I. x² + 7x + 10 = 0

II. y² + 5y + 4 = 0

Directions : Read the graph and answer the following questions.

The total income exceeds the total expenditure over the years 1982 to 1986 by

There is 40% sugar in 3 liters of sugar solution, what percentage of sugar will be in the new solution if one liter of water is added to this solution?

If 20% of (A+B) = 50% of B, then Value of $${2A-B}\over {2A+B}$$ is