Question

A watch and a pen cost $105. If 2 such pens cost $18 more than the watch, find the cost of 2 such watches.

Answer 1

Explanation:

let the cost of one pen be x and the cost of one watch be y

cost of a watch and a pen=$105

cost of 2 such pens=$18 more than the watch = 18+y ------(1)

18+y=105

y=105-18

=87