In a fruit salad, there are raspberries, green grapes, and red grapes. There are seven more than 3 times the number of red grapes as green grapes. There are 5 less raspberries than green grapes. If there are 102 pieces of fruit in the salad, how many red grapes are in the salad? Give me reasons, before answering the question
Green grapes = G. Red grapes = 3G + 7. Raspberries = G - 5. G + 3G + 7 + G - 5 = 102. 5G + 2 = 102. 5G = 100. G = 20. 3 * 20 + 7 = 67. There are 67 red grapes. So the final answer is 67.