Question

Raj buys books worth rupees four hundred, he has coins of denomination two-rupees. How many coins does he need to pay the bill?

(a) 200

(b) 100

(c) 400

(d) 150

The question was asked in a national level competition.

Origin of the question is Applications of Linear Equation (Create and Solve the Equations) in division Linear Equations in One Variable of Mathematics – Class 8

Answer 1

The correct option is (a) 200

Easiest explanation: Let the number of coins required be x.

The amount to be paid is rupees 400.

(2 * x) = 400

∴ 2x = 400

∴ x = 200

Raj needs 200 coins each of two rupees in order to pay the bill amount.