Question

In each of the following , check whether or not the given ratios form a proportion . (1) 25:40 and 20:30 (2) 15/18 and 10/12 (3) 7/8 and 14:16​

Answer 1

Step-by-step explanation:

25 : 40 and 20 : 32

Since 25 : 40 = 25/40 = 5/8

and 20 : 32 = 20/32 = 5/8

∴ Ratio 25 : 20 and 20 : 32 are equal, so

they form a proportion.

(v) 15/18 and 10/12

Since 15/18 = 5/6 and 10/12 = 5/6

∴ Ratio 15/18 and 10/12 are equal, so they form a proportion.

(vi) 7/8 and 14 : 16

Since 7/8 = 7/8 and 14 : 16 = 14/16 = 7/8

∴ Ratio 7/8 and 14 : 16 are equal, so they form a proportion.