Question

Find the ratio of the following:
(a) 81 to 108 (b) 98 to 63
(c) 33 km to 121 km (d) 30 minutes to 45 minutes by multiplication method
​

Answer 1

Answer:

(a) 81 / 108 = (3 × 3 × 3 × 3) / (2 × 2 × 3 × 3 × 3)

=3 / 4

(b) 98 / 63 = (14 × 7) / (9 × 7)

= 14 / 9

(c) 33 / 121 = (3 × 11) / (11 × 11)

= 3 / 11

(d) 30 / 45 = (2 × 3 × 5) / (3 × 3 × 5)

= 2 / 3