Answer:
In total they both lost 150 pennies.
Explanation:
Since Dante and Mia have 350 pennies in their piggy banks, altogether, and after Dante lost half of his pennies and Mia lost one third of her pennies, they both had an equal amount of pennies left, to determine how many pennies did they lose altogether the following calculation must be performed:
350 = 200 + 150
200 - (200/2) = 200 - 100 = 100
150 - (150/3) = 150 - 50 = 100
Therefore, in total they both lost 150 pennies.