Answer:

Explanation:
Given that :
- A publishing house is selling subscriptions to magazines for 10% off the original price.
- If a subscription to Time Magazine costs $58.50 with the discount.
to find :
- what was the original price ?
explanation :
finding the original price
⟼ 100 •/• - 10 •/• = 90•/•
⟼ 90.•/• = $ 58•50
⟼ 1 •/• = $ 58•50 / 90
⟼ 100 •/• = $ 58•50 / 90 × 100
⟼ 100 •/• = $ 5850 / 90
⟼ 100 •/• = $ 585 / 9
⟼ 100 •/• = $ 65.
∴ the original price is $ 65.