Number of boys and girls in a school are in the ratio 7 : 5. If the number of boys is 84, the total number of students is
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Answer:
336
Step-by-step explanation:
7x/5x = 84/x
according to cross multiplication
8x = 5x (84)
3x =84
x =84/3
x= 28
total students = 7+5 12
12x= 336
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