How much of a(n) 60% orange juice drink must be mixed with 8 gallons of a 30% orange juice drink to obtain a mixture that is 50% orange juice?

Question

How much of​ a(n) 60% orange juice drink must be mixed with 8 gallons of a 30% orange juice drink to obtain a mixture that is 50% orange​ juice?

Reiny · Accepted Answer

.6x + .3(8) = .5(x+8) times 10 6x + 24 = 5x + 40 x = 16

Scott · Answer

.6 x + (.3 * 8) = .5 (8 + x)

How much of​ a(n) 60% orange juice drink must be mixed with 8 gallons of a 30% orange juice drink to obtain a mixture that is 50% orange​ juice?