Question

A ratio equivalent to 3 : 7 is:(i) 3 : 9; (ii) 6 : 10; (iii) 9 : 21; (iv) 18 : 49​

Answer 1

Answer:

Ratio equivalent is when you multiply both numerator and denominator with same integer.

for example,

3/7×3/3=9/21

3/7×2/2=6/14

and so on....

so your answer is option (iii) 9:21