Question

Exercise : R-1
1. Which of the following ratios are in proportion?

(b) 18 : 30 and 14:21​

Answer 1

Step-by-step explanation:

18 : 30 :: 14:21

if two ratios are in proportion ,product of means =product of extremes

if 18:30 ::14:21,

30×14 = 21×18

420 = 378 (false)

CLEARLY WE CAN SEE THAT THEY ARE NOT EQUAL...

HENCE THEY ARE NOT IN PROPORTION.