# RD Sharma Solutions For Class 7 Maths Chapter 11 Percentage Exercise 11.2

The main objective of providing exercise-wise solutions in PDF is to help students speed up their exam preparation. The questions present in this exercise have been solved by BYJUâ€™S experts in Maths, and these solutions guide students to study effectively. The students can download solutions which are available in PDF format easily. RD Sharma Solutions for Class 7 Maths Chapter 11 Percentage Exercise 11.2 are provided here. This exercise contains the step-wise method to the conversion of a ratio into percent and vice versa.

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Exercise 11.2 Page No: 11.4

1. Express each of the following ratios as per cents:

(i) 4: 5

(ii) 1: 5

(iii) 11: 125

Solution:

(i) Given 4: 5

4: 5 can be written as (4/5)

= (4/5) Ã— 100

= 80%

(ii) Given 1: 5

1: 5 can be written as (1/5)

= (1/5) Ã— 100

= 20%

(iii) Given 11: 125

11: 125 can be written as (11/125)

= (11/125) Ã— 100

= (44/5) %

2. Express each of the following percents as ratios in the simplest form:

(i) 2.5%

(ii) 0.4%

(iii) 13 3/4 %

Solution:

(i) Given 2.5%

= (2.5/100)

= (25/1000)

= (1/40)

(ii) Given 0.4%

= (0.4/100)

= (4/1000)

= (1/250)

(iii) Given 13 3/4 %

13 3/4 = 13.75

= 13.75/100

= 1375/10000

= 11/80