Question

A student was asked to multiply a number by 11 by mistake he multiplied the number by 101 .if the difference between the wrong number and the right number is 900 find out the number.

Answer 1

Step-by-step explanation:

101 × x -11 × x = 900

101x - 11x = 900

90x = 900

x = 900 / 90

x= 10

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Answer 2

Given:

The number to be multiplied = 11

The mistaken number multiplied = 101

Difference between the numbers = 900

To Find:

The correct number

Solution:

Let the number be = x

if it is multiplied by 11 then the number is = 11x

But the student multiplied it with 101 then student's answer = 101 x

As per the question, the difference of these numbers is 900

Thus -

101x - 11x = 900

90x = 900

x = 900/90

x = 10

Answer: The correct number is 10.