Page 86 - New Medley 5 Semester 2

Solution: First, write the percentages into fractions and then divide
numerator as well as denominator by their HCF.

60 60 ÷ 20 3
(a) 60% = = = ( HCF of 60 and 100 is 20)
100 100 ÷ 20 5

17
85 85 17
(b) 85% = = = ( HCF of 85 and 100 is 5)
100 100 20
20
1
2 50 50 1 1
(c) 16 % = % = = =
3 3 3 × 100 2 3 × 2 6

EXERCISE 1.1

A. Observe the following square grid and write the fraction and percentage

that different shades represent.
Fraction Percentage

1. Orange
2. Pink

3. Blue
4. Purple

5. Green
What part of the grid is unshaded in the above square grid? Also, express

it into percentage.

B. Convert the following fractions into percentages:

3 9 6 18 43
1. 2. 3. 4. 5.
4 20 25 5 50

17 7 6 30 35
6. 7. 8. 9. 10.
30 10 15 70 80

C. Convert the following percentages into fractions:
1. 40% 2. 60% 3. 70% 4. 80% 5. 35%

1 1 2 1
6. 48% 7. 12 % 8. 33 % 9. 16 % 10. 6 %
2 3 3 4

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