SOLUTION: In a recent fundraiser, Daniela sold 5 less than twice as many coupon books as Andrew. Together, they sold a total of 28 coupon books. How many did Daniela sell?

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Question 1168297: In a recent fundraiser, Daniela sold 5 less than twice as many coupon books as Andrew. Together, they sold a total of 28 coupon books. How many did Daniela sell?
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
Andrew = a
Daniela = 2a - 5

a + (2a - 5) = 28
3a - 5 = 28
3a = 33

a = 11

Daniela = 2a - 5 = 2(11) - 5 = 17