Question

Express 3/4 as a rational number whose denominator is 20

Answer 1

Given :  Rational number 3/4

To Find : Express 3/4 as a rational number whose denominator is 20

Solution:

To Express 3/4  as a rational number with denominator  20

We will multiply  Numerator & denominator with

Hence

3/4

= 3 * 20  / ( 4 * 20 )

Now we will factorize 20

20 = 2 * 2 * 5  

and replace numerator with factors

= 3 * 2 * 2 * 5 / ( 4 * 20)

= 3 * 4 * 5 / (4 * 20)

Cancel out 4 from numerator & denominator

= 3 * 5 / 20

= 15/20

15/20  = 3/4

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Answer 2

Step-by-step explanation:

3/4

=3×20/(4×20)

=3×5/20

=15/20=3/4