Question

The ratio of no. Of boys to the no. Of girls in a school of 450 student is 4:5 than sum new boys and girls are admite the no. Of boys increase 25 and the ratio of ratio of boys to girls change to 9:13 calculate the no. Of new girls admite

Answer 1

Answer:

75

Step-by-step explanation:

Given,The ratio of no. Of boys to the no. Of girls in a school of 450 student is 4:5 i.e.4x+5x=450

9x=450

x=50

There are 200 boys and 250girls.

than sum new boys and girls are admite the no. Of boys increase 25 and the ratio of ratio of boys to girls change to 9:13

then the share of boys,

9x=200+25

9x=225

x=25

then the number of girls =13x i.e.13×25=325

the no. Of new girls admite=325-250=75