Question

EXERCISE 8.1(C)
in the school.
ting to
illi
Q.1. The number of boys and girls in a school are in the ratio 8:7. If
total strength of the school is 2250, find number of boys and girls
Q.2. The sides of a triangle are in the ratio 3:4:5. If the perimeter of triangle is 24cm, find the length of
each side of the triangle.
Q.3. What number must be added to each term of the ratio 3:8 so that ratio becomes 2:3.​

Answer 1

Step-by-step explanation:

Q1

8:7

8x +7x = 2250

15x =2250

x =2250÷15

x= 150

no of boys in a school=150×8=1200

no of girls in a school =150×7=1050

Q2

3x+4x+5x=24

12x=24

x=24÷12

x=2

1 side =2×3=6cm

2 side=2×4=8cm

3 side=2×5=10cm