Problema Solution
malcolm paid an average of $30 per tie for a recent purchase of three ties. the price of one tie was twice as much as another and the remaining tie cost $27. what were the prices of the other two ties?
Answer provided by our tutors
3 ties cost $30. (Note the '$' is placed in front of the value.)
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3 ties could be defined: a, b, c.
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one tie was twice as much as one of the others
b = 2a
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the remaining tie cost $27
c = 27
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a +2a + 27 = 30
3a = 3
a = 3/3
a = $1