Question

If 24 newspapers weigh 576 grams, then how many newspapers will weigh 2.88 kilograms?

• A. 150
• B. 120
• C. 124
• D. 145

Answer 1

The correct option is B 120

Given,
the weight of 24 newspapers is 576 grams.

We know that, if the number of newspapers increase, the weight will also increase.

$\text{So, Number of newspapers}\left(x\right)\propto \text{Weight}\left(y\right)$
$\therefore \frac{x_1}{y_1}$ = $\frac{x_2}{y_2}$

Given,
$x_1=24newspapers$
$y_1=576grams$
$y_2=2.88\times 1000=2880grams$
$\text{and}{x}_2=\text{Number of newspapers}$
$\Rightarrow x_2=\frac{x_1\times y_2}{y_1}$
$\Rightarrow y_2=\frac{24\times 2880}{576}=120$

Hence, 120 newspapers will weigh 2.88 kilograms.