# Ex.8.1 Q2 Compairing Quantities - NCERT Maths Class 7

## Question

In a computer lab, there are \(3\) computers for every \(6\) students. How many computers will be needed for \(24\) students?

## Text Solution

**What is Known?**

Number of computers for \(6\) students

**What is Unknown?**

Number of computers for \(24\) students

**Reasoning:**

This question can be solved using unitary method. Since number of computers required for six students are given, we can find how many computers are required for one student and from the answer, number of computers required for \(24\) students can be calculated.

**Steps:**

For \(6\) students, \(3\) computers needed

So for one student computers needed

\[\begin{align}&=\frac{3}{6} \\ &=\frac{1}{2} \end{align}\]

And for \(24\) students number of computers required

\[\begin{align}&=\,\text{24}\times\frac{\text{1}}{\text{2}}\, \\ &=\,\text{12}\,\text{computers} \end{align}\]