Problema Solution
Sam went shopping at a department store. He spent 1/5 of his money on a sofa set and $800 on a washing machine. Later, he spent 1/8 of his remaining amount on a dining table. if the amount of money left was
$100 more than half of the amount he had at first, how much money did Sam have at first?
Answer provided by our tutors
let
x = the amount of money Sam had at first
(x - ((1/5)x + 800))(1 - 1/8) = 100 + x/2
by solving we find:
x = $4,000
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Sam had $4,000 at first.