10 pounds of candy costing $1.20 per pounds must be mixed with 40 pounds of candy costing $ 0.95 per pound to obtain a 50 pounds of candy costing $ 1 per pound
Let us assume x be the pounds of candy at $ 1.20 per pound
So,
(50 - x) is the pounds of candy at $ 0.95 per pound
Now the equation should be
1.20x + (50 - x)0.95 = 50 (1)
1.20x + 47.5 - 0.95x = 50
0.25x = 50 - 47.5
0.25x = 2.5
x = 10
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