Question

20. Ratio between the girls and boys in a class of 40 students is 2:3. Five new
students joined the class. How many of them must be boys so that the ratio
between girls and boys becomes 4:5.






please amswer this fast and correct please i will mark the correct answer as br​

Answer 1

Answer:

Before

students= 40

ratio = 2:3

let the girls and boys be x

2x+3x = 40

5x = 40

x = 40/5

x = 8

number of girls = 2×8= 16

number of boys = 3×8 = 24

After

Total students = 40+5 = 45

Ratio = 4:5

let the x be ratio

4x+5x = 45

9x = 45

x = 45/9

x = 5

girls = 4×5 = 20

boys = 5×5 = 25

girls add number = 20 - 16= 4

boys add number = 25-24 =1 answer

1 boys add

Answer 2

Step-by-step explanation:

Hope you like the answer dear mate...