Question

If 90% of y is 630 km, then the value of y is

Answer 1

Given - Statement that 90% of y is 630 kilometres.

Find - Value of y.

Solution - 90% of y will be mathematically represented as (90/100)*y = 630.

Now, solving the equation -

9y = 6300

Thus dividing 6300 by 9 will give value of y

y = 700

Hence, the value of y is 700 and unit of y is kilometres. Therefore complete answer is - value of y is 700 kilometres.

Percentage is represented as a fraction which always has denominator 100.

Answer 2

If 90% of y is 630 km, then the value of y is 700 km

Given:

90% of y is 630 km

To Find:

The value of Y

Solution:

90% of y is 630 km

According to the given question:

$= > \dfrac{90}{100} \times y = 630$

$= > \dfrac{9}{10} \times y = 630$

$= > \dfrac{9y}{10} = 630$

$= > 9y = 630 \times 10$

$= > 9y = 6300$

$= > y = \dfrac{6300}{9}$

$= > y = 700$

Hence, the value of y is 700 km