Last week, Raina and Bob made a combined total of 190 sales at a computer store. Raina made how many more sales than Bob

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Last week, Raina and Bob made a combined total of 190 sales at a computer store. Raina made how many more sales than Bob?

(1) The difference between the number of sales Raina made and the number of sales Bob made was ten percent of the number of sales Raina made.

(2) Bob made \(\dfrac9{19}\) of the total number of sales made by himself and Raina.

Answer: D

Source: Veritas Prep