Mason bought a used motorbike for $40 more than half its original price. Mason paid $280. What was the original price of the motorbike?

Question

How do I solve this?

Answer 1

p/2 + 40 = 280

p/2 + 40 - 40 = 280 - 40

p/2 = 240

2(p/2) = 240(2)

p = $480