Q5 of 59 Page 61

Convert the following ratios into percentage.

(i) 15 : 25


(ii) 47 : 50


(iii) 7/10


(iv) 546/600


(v) 7/16

(i) 15 : 25


= 15/25


= ((15/25) × 100)%


= (15 × 4) %


= 60 %


(ii) 47 : 50


= 47/50


= ((47/50) × 100)%


= (47 × 2) %


= 94 %


(iii) 7/10


= ((7/10) × 100)%


= (7 × 10) %


= 70 %


(iv) 546/600


= ((546/600) × 100)%


= (546/6) %


= 91 %


(v) 7/16


= ((7/16) × 100)%


= (7 × 6.25) %
= 43.75 %


More from this chapter

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3

Express the following percentages as ratios in the reduced form.

(i) 75 : 100


(ii) 44 : 100


(iii) 6.25%


(iv) 52 : 100


(v) 0.64%

 4

Three persons can build a small house in 8 days. To build the same house in 6 days, how many persons are required?

 6

The ratio of ages of Abha and her mother is 2 : 5. At the time of Abha's birth her mother’s age was 27 year. Find the present ages of Abha and her mother.

 7

Present ages of Vatsala and Sara are 14 years and 10 years respectively. After how many years the ratio of their ages will become 5:4?