Question

a no. is decreased by 10 equals two third of the no. find the no.​

Answer 1

Let x be the number.

$x - 10 = \frac{2}{3}x \\x - \frac{2}{3}x = 10\\\frac{1}{3}x = 10\\x = 30$

Therefore, the number is 30.

Answer 2

hey mate....

here is your answer:

Given:

a number is decreased by 10 equals two-third of the number.

Required:

To find the number=?

Solution:

let suppose the number be = x

According to the given condition:

 x - 10 = $\frac{2}{3}$ x

Multiplying 3 on both sides:

 3( x - 10 ) = 3 ( $\frac{2}{3}$ x )

 3x - 10 = 2x

Subtracting 2x from both sides:

 3x - 2x - 10 = 2x - 2x

 x - 10 = 0

Adding 10 on both sides:

 x - 10 + 10 = 0 + 10

 x = 10

Result:

hence,

10 is our required number.

hope this helps...

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