waecmaths question:
A shopkeeper allows a discount of 15% on the market price of a mobile phone. If a customer paid GH¢ 170.00 for a mobile phone. What was the marked price of the phone?
Option A:
GH¢ 144.50
Option B:
GH¢ 195.40
Option C:
GH¢ 200.00
Option D:
GH¢ 255.00
waecmaths solution:
Let the actual price be x
15% of actual price $\frac{15}{100}x=0.15x$
The amount paid by the customer is x – 0.15x
Therefore x – 0.15x = GH¢170.00
0.85x =GH¢170.00
x = GH¢200
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