marcos had 15 coins in nickels and quarters. he had 3 more quarters than nickels. how many of each coin did he have

Question

marcos had 15 coins in nickles and quarters he had 3 more quarters than nickels

Answer 1

Let N = number of nickels

Let Q = number of quarters

 

15 coins  ==>  N + Q = 15

 

3 more quarters than nickels  ==>  Q = N + 3

 

Substitute the value for Q in to the first equation

 

N + (N + 3) = 15

2N = 12

N = 6

 

So Q = 6 + 3 = 9

 

Marcos had 6 nickels and 9 quarters