Question

by what number must the given number be multiplied to increase the no by 10 percent

Answer 1

To increase the Number by 10% ,,,it must be Multiplied by 1.1


For ex. ::

let number be x

10%of x = (10/100)x= 0.1x

Now x is increased by 10% ,,,that means

x+10%x= x+0.1x= 1.1x

so to increase any number by 10% ,,,it must be multiplied by 1.1 or (11/10)

Answer 2

A number must be multiplied with 11/10 or 1.1 to increase the number by 10%

Given:

• A number increased by 10 %

To Find:

• By what number , it should be multiplied

Solution:

Step 1:

Assume that number is x

Step 2:

Assume that number is multiplied by y so that number is increased by 10%

Step 3:

Multiply x and y to get new number

xy

Step 4:

Add 10% of x in x to get new number

x + (10/100)x

= x + x/10

= 11x/10

Step 5:

Equate the numbers

xy = 11x/10

Step 6:

Cancel x from both sides

y = 11/10

y = 1.1

Hence, A number must be multiplied with 11/10 or 1.1  to increase the number by 10%