Question

If the cost of a pen is ₹ 6.20. Find the cost of 5 such pens in rupees.

• A. 31

Answer 1

The correct option is A 31
Cost of one pen = $₹6.20$
$\Rightarrow$ Cost of 5 pens = $₹6.20\times 5$
Multiplying the numbers ignoring the decimal places we get:
=620 x 5 = 3100

When a decimal number is multiplied by a whole number, the resulting number will have as many decimal places as the initial decimal number.
$\therefore$ Cost of 6 pens is ₹31.