Question

Arlene buys a phone case and charging cord for 15% off. The original cost of the phone case is $18. Her total discount is $4.20

Write and solve an equation to find the original price of the charging cord,x

Answer 1

$10

Explanation:

$18*15% + x *15% = $4.20

= $2.70 + 0.15x = $4.20

x = $4.20 - $2.70 / 0.15 = $10

Therefore cost of charging cord is $10