Question

One grade of tea, worth $3.40 per pound, is to be mixed with another grade worth $2 per pound to make 20 pounds that will sell for $2.63 per pound. How much of each grade of tea must be used?

Step 1

Let *x *and *y *be the quantity of grade-I and grade II tea in pounds, respectively.

The total mixture is 20 pounds. That is,

Step 2

The total cost of the mix...

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