Answer:
12 1/2 dollars
Step-by-step explanation:
add 10 9/10 and 6 3/5
you have least common multiple of the demoninators which is 10
so 6 3/5 is equal to 6 6/10
the you can add which gets you 16 15/10
simplified is 17 5/10 then you can change it to 17 1/2
then you subtract that from 30
30-17 1/2 = 12 1/2 dollars
