Question

Write each of these ratios in its simplest form:

a) 7:21:35
b) 9 min: 600 s​

Answer 1

a) 1:3:5

b) 3 min: 200 s

Explanation:

a) find a common factor you can divide them all by, in this case it would be 7.

7÷7=1

21÷7=3

35÷7=5

=1:3:5

b) find the common factor (3)

Divide all the numbers by the factor

9÷3=3

600÷3=200

=3 mins: 200 s

Answer 2

a) 1:3:5

b) 9:10

Explanation:

a) 7:21:35

Simplify by 7, we get the ratio

1:3:5

b) 9 min: 600 seconds

9 min = 540 seconds

540 seconds: 600 seconds

Simplify by 60, we get the ratio

9:10