Question

If a pen cost ₹ 10 and 15 pencils cost ₹ 150, how many pens can I buy with the cost of purchasing 30 pencils?

• A.
  15
• B.
  10
• C.
  30
• D.
  20

Answer 1

The correct option is C

30
Given,
15 pencils cost ₹ 150
$\Rightarrow$ Value of 15 pencils = ₹ 150
$\Rightarrow$ Value of 1 pencils = $\frac{150}{15}=₹10$

$\therefore$ Cost of 30 pencils = $10\times 30=₹300$

$\because$ One pen costs ₹ 10, the number of pens I can buy with ₹ 300 = $\frac{300}{10}=₹30$