Problema Solution
Malcolm paid an average of $28 per tie for a recent purchase of 3 ties. the price of one tie was twice as much as another and the remaining tie cost $21. what are the prices of the two ties?
Answer provided by our tutors
let
the cost of one tie be: x
the cost of one tie was twice as much as another: 2x
remaining tie cost: $21
Malcolm paid an average of $28 per tie for a recent purchase of 3 ties:
(x + 2x + 21)/3 = 28
by solving we find
x = $21
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2x = 2*21 = $42
the prices of the two ties are $21 and $42.