Lizzy: 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?.
Me: Hmmm, let me think. I think this is the detailed solution:
User
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. Final answer: 67.
Assistant