SOLUTION: The price of oil decreases by 8% ,as a result sanjeev can purchase 2liter more oil for rupees420.what is the reduced price oil per liter?

Question 923887: The price of oil decreases by 8% ,as a result sanjeev can purchase 2liter more oil for rupees420.what is the reduced price oil per liter?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = original price per liter
(0.92)x = reduced price per liter
y = liters purchased at price x for 420 rupee
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xy = 420
(0.92)x(y + 2) = 420
(0.92)xy + (0.92)2x = 420
(0.92)420 + (0.92)2x = 420
386.4 + (1.84)x = 420
(1.84)x = 420 - 386.4
x = (420 - 386.4)/1.84
x = 18.261
reduced price per liter = (0.92)18.261
---
answer:
reduced price per liter = 16.80 rupee/liter
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