Class 8 RD Sharma Solutions – Chapter 12 Percentage – Exercise 12.1
Question 1: Write each of the following as percent:
Explanation: To convert into percent, we need to multiply 100 into the given value.
Note: Don’t forget to write the percentage sign in your answer.
a) 7/25
Solution:
(7/25) * 100
= 28%
b)14/265
Solution:
(14/265) * 100
= 2.24%
c) 5/8
Solution:
(5/8) * 100
= 62.5%
d) 0.8
Solution:
(0.8) * 100
= 80%
e) 0.005
Solution:
(0.005) * 100
= 0.5%
f) 3:25
Solution:
(3/25) * 100
= 12%
g)11:80
Solution:
(11/80) * 100
= 13.75%
h) 111:125
Solution:
(111/125) * 100
= 88.8%
i) 13:75
Solution:
(13/75) * 100
= 17.33%
j) 15/16
Solution:
(15/16) * 100
= 93.75%
k) 0.18
Solution:
(0.18) * 100
=18%
l) 7/125
Solution:
(7/125) * 100
= 5.6%
Question 2: Convert the following percentage into fraction and ratios:
Explanation: To convert percentage into fraction and ratios, we need to divide the number by 100 and reduce the fraction to lowest possible term.
Note: Don’t forget to remove the percentage sign.
a) 25%
Solution:
25/100 (Divide numerator and denominator by 5)
= 5/20 (Divide numerator and denominator by 5)
= 1/4
=1:4
b) 2.5%
Solution:
2.5/100
= 25/1000 (Divide numerator and denominator by 25)
= 1/40
= 1:40
c) 0.3%
Solution:
0.3/100
= 3/1000
= 3:1000
d) 125%
Solution:
125/100 (Divide numerator and denominator by 25)
= 5/4
= 5:4
Question 3: Express the following as decimal fractions:
Explanation: To convert percent into fraction divide it by 100 and then convert fraction into decimal values.
a) 27%
Solution:
27/100
= 0.27
b) 6.3%
Solution:
6.3/100
= 0.063
c) 32%
Solution:
32/100
= 0.32
d) 0.25%
Solution:
0.25/100
= 0.0025
e) 7.5%
Solution:
7.5/100
= 0.075
f) (1/8)%
Solution:
(1/8)/100 (100 will get multiplied by 8)
= 1/800
= 0.00125
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