Question

In a school, the ratio of the number of boys to the number of girls is 4:5. When 100 girls leave
the school the ratio becomes 6:7. Find the number of boys in the school.
​please answer now it's urgent!!!!!!!!​

Answer 1

Answer:

No of boys are 4*300=1200

No of girls are 5*300=1500

Step-by-step explanation:

Let boys are 4x and girls are 5x

100 girls leave, so now girls are 5x-100

4x/5x-100 = 6/7

28x = 30x-600

30x-28x=600

2x=600

x=300

No of boys are 4*300=1200

No of girls are 5*300=1500