In a class the ratio of students to boys is 5:3 and 3/4 of the girls travel to school by bus. 12 girls do not travel to school by bus. find the strength of the class.
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Answer:
120
Step-by-step explanation:
let the total girls be X
3/ 4 * X travel to school by bus
3/4 X travel to school by bus
remaining girls = X - 3/4 X
= X / 4
given 12 girls don't come to school by bus
X /4 = 12
X = 12* 4 = 48
total girls are 48
ratio of total students to boys 5:3
total students = 5 x
total boys = 3 X
total girls = 48
48+ 3x = 5 x
48= 5 x - 3 X
48 = 2 X
X = 48/2
X = 24
total boys = 3 X = 3 * 24= 72
total girls = 48
total students = 5 x = 5*24 = 120
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