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
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
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Answered by
0
Answer:
135
Step-by-step explanation:
boys=7x
girls=2x
7x=2x+70
5x=70
x= 70/5
x=15
total number of people= 7x+2x=9x
9x=9*15
=135 people
Answered by
8
Step-by-step explanation:
Let the ratio of boys and girls = 7x : 2x
7x = 2x + 70
5x = 70
x = 14
Number of boys = 7(14) = 98
Number of girls = 2(14) = 28
Total ( boys + girls ) = 98+28 = 126 people
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