Winston bought his family dinner at a local restaurant. With tax, his total came to $46.47. Winston wanted to add a 15% tip, but he kept calculating a total of $40.41. What mistake did Winston make when calculating the tip? A Winston subtracted 15% when he should have added 15%. B Winston divided by 15% when he should have multiplied by 15%. C Winston multiplied by 85% when he should have multiplied by 115%. D Winston divided by 115% when he should have multiplied by 115%