Math problem

Question

A parking meter contains dimes and nickles worth $ 4.75. There are 71 coins in all. Find How many of each there are.

 

 

How many dimes are there?

___dimes.

 

How many nickles are there?

___ nickles.

Answer 1

x=nickles

y=dimes

 

0.05x+.1y=4.75

x+y=71 also written as y=71-x

 

0.05x+.1(71-x)=4.75

0.05x+7.1-.1x=4.75

 

2.35=0.05x

x=47

 

47+y=71

y=25

 

47 nickles and 25 dimes