Hello!
To find the amount of cups that has the same amount of each type of fruit and with nothing left over, we can find the greatest common factors for each type of fruit.
25 = 1, 5, 25
15 = 1, 3, 5, 15
50 = 1, 2, 5, 10, 25, 50
Since 5 is a common factor in all the numbers, Melody would make 5 cups.
To find the amount of fruit she needs to put in every cup, we can divide the amount of each fruit by five cups.
25 grapes / 5 cups = 5 grapes/cup
15 strawberries / 5 cups = 3 strawberries/cup
50 blueberries / 5 cups = 10 blueberries/cup
Therefore, she will make 5 cups of fruit salad with 5 grapes, 3 strawberries, and 10 blueberries in each cup.