Step-by-step explanation
Ratio equivalent to 12:3
= 12:3
= 12/3 (.°.3x4= 12 and 3x1=3)
= 3x4/3x1 (.°. cancellation of 3 from numerator and denominator)
= 4/1
likewise, 4:1 , 60:15 , 84:21 , 132:33..............etc no. of ratios are equivalent to 12:3
.°. Required ratios which are equivalent to 12:3 are4:1 , 60:15 , 84:21 , 132:33..............etc
