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Solve the following problems:
When the price of oranges is lowered by 40%, 4 more oranges can be purchased for $12 than can be purchased for the original price. How many oranges can be purchased for 24 dollars at the original price?
Let, original cost price of an orange is x dollar.
At 40% discount, the price of an orange is
=60% of x =60x100=3x5Dollar
According to the question
123x5-12x=4 =12×53x-12x=4
=20x-12x=4 =20-12x=4 =8x=4
∴x=84=2
∴Number of oranges that can be purchased by 24 dollars=242= 12 (answer)
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