Question

What number should be subtracted from each of the number 18 ,24,28,38 so that remainders may be in proportion?

Answer 1

may this helps you..

Answer 2

Answer:

The required number is 3.

Step-by-step explanation:

Given : Number 18 ,24,28,38

To find : What number should be subtracted from each of the number 18,24,28,38 so that remainders may be in proportion?

Solution :

Let x be the number subtracted from the numbers.

According to question,

Arranged in a proportion,

$\frac{18-x}{24-x}=\frac{28-x}{38-x}$

$(18-x)\times(38-x)=(28-x)(24-x)$

$684-18x-38x+x^2=672-28x-24x+x^2$

$12=38x+18x-28x-24x$

$12=4x$

$x=3$

The required number is 3.