SOLUTION: The price of milk is increased by 20%.Find by how much percent a housewife should reduce the consumption of milk so as to not to increase her expenditure?

Question 918962: The price of milk is increased by 20%.Find by how much percent a housewife should reduce the consumption of milk so as to not to increase her expenditure?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = price per unit before going up
= price per unit after going up
I can say they consumed any amount before
the price rose. I will say they consumed
units ( any units )
---------------------------
Let = the fraction to reduce consumption by

Divide both sides by

She needs to reduce consumption by 16.67%
check:
Say

----------------
Say they consume units
is the cost of milk before increase
-------------
Then they consume units
after increase

Their cost still is the same after increase in price -OK

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