THERE ARE 90 STUDENTS IN A CLASS 4:5 ARE BOYS AND GIRLS FIND THE NUMBER OF BOYS AND GIRLS
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Answered by
6
Answer:
4:5
boys : girls
total = 90
sum of ratio = 9
no of boys = 4/9×90
360÷9 = 40
no of girls = 5/9 × 90
450÷9 = 50
( checking = 40+50=90)
Answered by
2
Answer:
Let number of boys be 4x
Let number of girls be 5x
4x + 5x = 90
9x = 90
x = 90/9
x = 10
Number of boys = 4×10 = 40
Number of girls = 5×10 = 50
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