A storekeeper wants to mix two types of flour to get 300 pounds, so he can sell it by 2.50$ per pound. If he uses flour worth $2.40 a pound with another flour worth $3.00 a pound, how many pounds of each does he use?

90 pounds, 210 pounds

Step-by-step explanation:

Given:

A storekeeper wants to mix two types of flour to get 300 pounds, so he can sell it by 2.50$ per pound.

He uses flour worth $2.40 a pound with another flour worth $3.00 a pound.

Question:

How many pounds of each does he use?

Solution:

Let pounds of one type of flour mixed =

Then pounds of another type of flour mixed =

Cost of 1 pound of one type of flour = $2.40

Cost of pounds of one type of flour =

Similarly,

Cost of 1 pound of another type of flour = $3

Cost of   pounds of another type of flour =

Cost of mixed flour per pound = $2.5

Total cost of mixed flour per pound = $2.5 300 = $750

Cost of pounds of one type + Cost of   pounds of another type = $750

Pounds of one type of flour mixed = = 90 pounds

Pounds of another type of flour mixed = = 300 - 90 = 210 pounds

Thus, 90 pounds of one and 210 pound of another type of flour mixed.

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