Figgerin'
From
After initially stumbling over the same basic subtraction as
.4x + .7(10) = .45(10+x)
.4x + 7 = .45(10+x)
.4x + 7 = 4.5 + .45x
.4x = -2.5 + .45x
.05x = 2.5
x = 50 oz
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