Jack has $1.60 in pennies, nickels and dimes. The number of each kind of coin is the same. What is the total number of coins that Jack has?  Answers: A) 40 B) 35 C) 30 D) 25 E) 20
Let the number of each type of coin be a. Then 0.01a + 0.05a + 0.10a = 1.60
0.16a = 1.60
a = 10
So the total number of coins = 3a = 30
Answer: 30
<result>C</result>
Jack has $1.60 in pennies, nickels and dimes. The number of each kind of coin is the same. What is the total number of coins that Jack has?