ryan3311 ryan3311

22-12-2018
Mathematics

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The number of boys and girls in a class is 5:7. The number of girls is 8 more than the boys. Find: i. Number of boys in the class. ii. Number of girls in the class. iii. Total strength (total number of students) of the class.

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ChillMuse ChillMuse

22-12-2018

Answer:

i. 20

ii. 28

iii. 48

Step-by-step explanation:

7x = 5x + 8

7x - 5x = 8

2x = 8

x = 4

Number of boys in the class = 5x = 4 x 5 = 20

Number of girls = 7x = 4 x 7 = 28

Total strength of the class = Number of girls + number of boys = 28 + 20 = 48

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