Jos has a collection of 100 coins, consisting of nickels, dimes, quarters, and half-dollars. If he has a total of 35 nickels and dimes, a total of 45 dimes and quarters, and a total of 50 nickels and quarters, how many half-dollars does he have?
A.15
B.20
C.25
D.30
E.35
PS16620.02![]()
A.15
B.20
C.25
D.30
E.35
PS16620.02