Question

In order to compute 0.15 % of a number, it must be multiplied by
(a) 0.0015
(b) 0.015
(c) 0.15
(d) 1.5

Answer 1

Hint: Here, we can use the definition of percentage to find the answer. We know that the percentage is given as:

$Percentage=\dfrac{part}{whole}\times 100$

Complete step-by-step answer:

Percentage formula is used to find the amount or share of something in terms of 100. In its simplest form, percent means per hundred and it is denoted by %. It is mostly used to compare and find out ratios. Percentage formula can also be written in other form as:

$Percentage=\dfrac{value}{totalvalue}\times 100$

A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, ‘%’. A percentage is a dimensionless number. The percentage value is calculated by multiplying the numeric value of the ratio or fraction by 100. Due to inconsistent wage, it is not always clear from the context what a percentage is relative to. When speaking of a x% rise or x% fall in a quantity, the usual interpretation is that this is relative to the initial value of that quantity.

Here it is given that we have to find the value of 0.15 % of a number. So, we can write it as:

$\dfrac{1}{100}\times 0.15=0.0015$

 So, we will have to multiply the number by 0.0015.

Hence, option (a) is the correct answer.

Note: Students should remember the formula for calculating percentage correctly and the calculations must be done properly to avoid unnecessary mistakes.