Question

70% of a number is 105 ,then its 20.5% is​

Answer 1

ANSWER :

The number is 150 and its 20.5% is 30.75

EXPLANATION :

Let the number be x

70% of x = 105

70x/100 = 105

x = 105 × 100/70

x = 150

The number is 150

20.5% of 150 = 20.5/100 × 150

= 30.75

So 20.5 % of 150 is 30.75

Hope it helps......

Answer 2

The required number is 30.75.

Step-by-step explanation:

Given : 70% of a number is 105.

To find : Then its 20.5% is​ ?

Solution :

Let the number be 'x'.

70% of a number is 105.

i.e. 70% of x=105

$\frac{70}{100}\times x=105$

$0.7x=105$

$x=\frac{105}{0.7}$

$x=150$

Now, 20.5% of number is i.e. 20.5% of 150

$=\frac{20.5}{100}\times 150$

$=30.75$

Therefore, the required number is 30.75.

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