Question

The cost of 12 identical articles is ₹ 1,080. How many articles can one buy for ₹ 1,620?

• A. 16 articles
• B. 18 articles
• C. 19 articles
• D. 20 articles

Answer 1

The correct option is B 18 articles

Given, ₹ 1080 is the cost of 12 identical articles.

We know that if the amount spent increases, the number of articles bought will also increase.

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

Given,
$x_1=12$
$y_1=₹1080$
$y_2=₹1620$
$\text{and}{x}_2=\text{No. of articles for ₹1,620}$

$\Rightarrow \frac{12}{1080}$ = $\frac{x_2}{1620}$

$\Rightarrow x_2$ = $\frac{12\times 1620}{1080}$ = 18

So, for ₹ 1620, one can buy 18 identical articles.