A reduction of 20% in the price of mangoes enable a person to purchase 12 more mangoes for 15 rupees. Find the price of 16 mangoes before the reduction.
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If P = price before reduction, price after reduction = P(1-20%) = 0.8P
No. of mangoes for Rs 15 at original price = 15/P
No. of mangoes for Rs 15 at reduced price = 15/.8P
Therefore, 15/.8P -15/P = 12
P = 0.3125
So Price of 16 mangoes at original price = 16 x .3125 = 5
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