class 8 maths chapter 8 exercise 8.1

maths chapter 8 exercise 8.1 (1)

1 Find the ratio of the following.

(a) Speed of cycle 15 km per hour to the speed of scooter 30 km per hour.

(b) 5m to 10 km (c) 50 paise to Rs 5

Solution to class 8 maths chapter 8 exercise 8.1 (1).

(a) Speed of cycle = 15 km/hr

Speed of scooter = 30 km/hr

Hence ratio of speed of cycle to that of scooter = 15:30= 1:2

(b) 1km = 1000 m

10 km = 10×1000 = 10000 m

Ratio=5 m: 10000 m=1: 2000

(c) Rs 1= 100 paise

Rs 5 = 5×100=500 paise

Hence ratio = 50 paise : 500 Paise =1: 10