Dad bought a bag of cherries. Andy ate 1/10, Emily ate 2/5, and Mom and Dad ate 1/4. After, there were 60 cherries left. How many cherries did Andy and Emily eat?

Let's have all the fractions have the denominator, which is 20.

Andy: 2/20

Emily: 8/20

Parents: 5/20

Let's add all the fractions up.

All four: 15/20

This means, there's 5/20 of the bag left.

5/20 of the bag = 50 cherries.

Since they ate three times of what was left, that means they ate 150 cherries.

150+50=200

That means there were 200 cherries. Let's find how many each person ate and what was left.

Left: 50 cherries

Andy: 20 cherries

Emily: 80 cherries

Parents: 50 cherries

All: 200 cherries.

We need to find how many Andy and Emily ate.

80+20=100 or 2/20+8/20 = 1/2*200=100

So, Andy and Emily ate 100 cherries.