Question

What is the percentage increase in a positive number when it is multiplied by 3?​

Answer 1

Correct option is

C

2400 %

Let the number is 100

Then divided by 5=

5

100

=20

Or multiply by 5=100×5=500

Difference in both =500−20=480

Then percentage change in the result due to his mistake =

20

480×100

=2400 %.

Answer 2

Given,

A positive real number is given.

To find,

The increase in the percentage when the positive number is multiplied by 3.

Solution,

Hence, the percentage increase in a positive number when it is multiplied by 3  is 66.67%.

We can find the percentage increase in a positive number when it is multiplied by 3 by using the basic formula of percentage.

Let the positive number = 100

According to the given condition in the question,

The positive number i.e. 100 is multiplied by the number 3, it becomes 300

Difference = 300-100 = 200

%age increase in 100 when it is multiplied by 3 is = 200/300*100

                                                                                 =66.67%

Hence, the percentage increase in a positive number when it is multiplied by 3  is 66.67%.