toilet55 toilet55

15-03-2020
Mathematics

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The ratio of boys to girls in a group is 7:2. If there are 70 more boys than girls, work out how many people there are in total.

Respuesta :

devishri1977 devishri1977

15-03-2020

Answer:

126

Step-by-step explanation:

Boys: girls = 7:2

No. of boys = 7x

No. of girls = 2x

7x - 2x = 70

5x = 70

x = 70/5

x = 14

No. of boys = 7x = 7*14 = 98

No. of girls = 2x = 2*14 = 28

Total = 98 + 28 = 126

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