Question

A number is subtracted from -2.5, and the difference is a positive number Which could be the number?A) -5.2B) -2.5C) 0D) 3.8

Answer 1

Given:

A number is subtracted from -2.5, This difference gives a final positive number.

The objective is to find the number.

Step-by-step explanation:

Consider the unknown number as x.

The difference between the two numbers can be represented as,

`-2.5-(x)=\text{positive value}`

Since, the required result is a positive number and the given operation is difference, then the value of x should also be a negative number lesser than (-2.5).

So the only option which is lesser than (-2.5) is (-5.2).

Check:

`\begin{gathered} -2.5-(-5.2)=-2.5+5.2 \\ =2.7\text{ (positive number)} \end{gathered}`

Hence, option (A) is the correct answer.