A waiter income consist of his salary and tips. During one week his tips were 4/5 of his salary. What portion of his income came from tips?
Let salary of waiter be = x Then his tips = x× 4/5 = 4x/5 Total income = x+ 4x/5 = 9x/5 Portion of income come from tips = (4x/5)/(9x/5) = 4/9
12 years ago, A was 1/2 of B’s age. If the ratio of their present ages is 4:5, what will be the sum of their present ages?
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