Question

A school trip is being planned in a school for class VIII . Girls are 60 % of the total strength and are 18 in number. Find the ratio of number of boys to that of number of girls (answer pls!)​

Answer 1

Answer:

Ratio of Number of boys to that of girls = 2 : 3

Step-by-step explanation:

Let's assume that, the total strength = N

According to the problem:

$18 = N . \frac{60}{100}$

∴ $N = \frac{10 . 18}{6} = 30$

∴ Number of boys = 30 - 18 = 12

Ratio of Number of boys to that of girls = 12 : 18 = 2 : 3 [dividing both antecedent and consequent by 6]

Answer 2

Answer:

total number of student 100%

60% of girls

left percentage is boys 100%-60%=40%

total student=18

ratio of number of boys=40% of total student

40/100*18=36/5

36:5 number of boys student

number of girls=60/100*18=54/5

54:5 number of girls student

36/5+54/5=90/5=18 total number of student