There are 48 apple slice in the fruit salad that Ben's dad prepared for dinner. The slices were cut from apples that were sliced into 7 pieces each. That means that there were 48/7 apples used. How many apples were used in the salad? Express the answer as a mixed numbers.

7×6=42

7×7=49
so there are 6 and (48-42)=6/7 apples,
or 6 6/7 apples.

To find the number of apples used in the salad, we need to divide the total number of apple slices (48) by the number of slices cut from each apple (7).

To do this, we perform the division:

48 ÷ 7 = 6 remainder 6

Since each apple was sliced into 7 pieces, we know that 6 complete apples were used (result of the division) and there were 6 remaining slices (remainder).

Therefore, the answer is 6 and 6/7 apples were used in the salad.