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If b equals a plus 40 and 2a plus 2b equals 160. solve for a and b?
Wiki User
∙ 13y ago
2a + 2b = 160
But b = a + 40 so 2a + 2(a + 40) = 160
ie 2a + 2a + 80 = 160
or 4a = 80 ie a = 20
Then b = a + 40 gives b = 20 + 40 = 60
Solution: a = 20, b = 60
Wiki User
∙ 13y ago
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