7. Carol uses 3/4 of a cup of chopped apples, 42 of a cup of
diced peaches and 1/6 of a cup of cherries to make a fruit
salad.
How much fruit is in Carol's Salad?

2.91666666667 or 70/24 or 2 22/24

Step-by-step explanation:

3/4+4/2+1/6

18/24+48/24+4/24

66/24+4/24

70/24

6

Step-by-step explanation:

This is a case of combination since the order does not matter, it only matters that there must be a marble in each one inside, therefore we must apply its formula.

xCn = n! / x! * (n - x)!

n, in this case it would be 4 because we must subtract 2 from the total 6, since there must already be one inside in each display case.

x = 2, since it is the number of showcases.

Replacing:

 2C4 = 4! / 2! * (4 - 2)! = 6

Which means that you can in six different ways.