Question 971874
x=D pennies  y=Mia pennies

x/2  =2Y/3    She lost 1/3, so she has 2/3 left

But x+y =350

x=350-y

(350-y)/2 = 2y/3

cross-multiply

3(350-y)=4y
1050-3y  =4y
7y=1050
y=150 Mia; she loses a third, she has 100
x=200 Dante; he loses half, he has 100