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.

b

step-by-step explanation:

the word superfluous means unnecessary

option: d is the correct answer.

d) none of the above.

step-by-step explanation:

clearly from the figure attached to the question we could see that there is no shape given. hence without any shape given in the figure and after rotation we can't obtained a square pyramid.

since, to obtain a image we need a proper figure of the pre-image so that it can be transformed.

hence, the correct answer is:

d) none of the above.

step-by-step explanation: