In a school 3/7 of students are girls .if there are 240 boys find the number of girls
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Answered by
1
Answer:
Let the total no. of students be x
Total no. of boys = 240
Total no. of girls = 3/7 × x
No. of boys+no. of girls = no. of students
240 + 3x/7 = x
240 = x-3x/7
240 = 4x/7
240×7 = 4x
1,680/4 = x
420 = x
we know that,
No. of boys+no. of girls = no. of students
240 + no. of girls = 420
no. of girls = 420-240
no. of girls = 180
Answered by
1
Answer:
180 students
Step-by-step explanation:
Let the total no of students be 7/7
Given, 3/7 - girls
240 - boys(remaining)
When converting to a fraction it gives
7/7 - 3/7 = 4/7
∴ 4/7 = 240
1/7 = (240 × 1 ) ÷ 4
= 240/4
= 60
∴ No of students who are girls = 60 × 3
= 180 students
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