Question

In his pocket. Him, it has $2.95 and Dimes and quarters. If there are 16 coins in total, which system represents the number of Dimes and quarters that hamad

and has?

Answer 1

he has 9 quarter

and 7 dimes

Explanation:

let dime be x and quarter y

x+y=16

0.10x+0.25y=2.95 ( to ease the solution multiply both sides by 100)

10x+25y=295

x+y=16 ⇒ x=16-y

substitute in equation :

10x+25y=295

10(16-y)+25y=295

160-10y+25y=295

15y=295-160

15y=135

y=135/15=9

x+y=16

x=16-9=7