Instructions

For the following questions answer them individually

Question 11

The simple interest on a sum of money is $$\frac{16}{25}$$ of the principal. The number of years is equal to the rate of interest per annum. What is the rate (in percentage) of interest per annum?

Question 12

If Rajan purchase 21 pens for Rs.20 and sell all the pens at the rate of 20 pens for Rs.21, then what will be the proﬁt percentage?

Question 13

A book is sold at three successive discounts of 20%, 20% and 10%. What is the net discount (in percentage)?

Question 15

Rashika can do a work in 5 days. Rashmi can do the same work in 7 days. Both of them ﬁnish the work together and they get Rs.240 for the work. What is the share (in Rs) of Rashika?

Question 16

$$\frac{1}{3}$$ part of a certain journey is covered with the speed of 25 km/hr, $$\frac{1}{2}$$ part of the journey is covered with the speed of 45 km/hr and the remaining part covered with the speed of 37.5 km/hr. What is the average speed (in km/hr) for the whole journey?

Instructions

The pie chart shows the contribution of all the sectors towards the GDP of the economy of a certain country. Study the diagram and answer the following questions.

Question 20

If in the following year sectors A, B and C grew by 9% and the remaining sectors grew by 3%, how much did the overall economy grow by?