Question

A grocer has 2 types of tea, one for sells for $8.00 per pound and the other for $6.00. How many pounds of each kind must he use to make 50 pounds of tea that will sell for $7.40 per pound

Answer 1

Equation::
value + value = value
80x + 60(50-x) = 74*50
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80x + 60*50 - 60x = 74*50
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20x = 14*50
x = 35 lbs (amt. of 80 cent tea to use)
50-x = 15 lbs (amt. of 60 cent tean to use)