Respuesta :
Answer:
2 nickels
6 quarters
Step-by-step explanation:
Let quarters be 3x and nickels be $x
if Mark had 3 times as many quarters as nickels, and if he had $1.60 in all, than
( 0.25)3x + 0.05x=1.6
0.75x+ 0.05x=1.6
0.8x=1.6
x=1.6/0.8
x=2 nickels
and 3 (2)=6 quarters
Answer:
There are 4 quarters and 12 nickels.
Step-by-step explanation:
A quarter is equal to $0.25.
A nickel is equal to $0.05.
Let the number of nickels be y.
Let the number of quarters be x.
Mark had 3 times as many quarters as nickels. This means that:
y = 3x
3x represents the number of nickels.
We are told that he had $1.60 in all. This means that:
0.25x + 0.05y = 1.60
=> 0.25x + 0.05 * 3x = 1.60
0.25x + 0.15x = 1.60
0.40x = 1.60
=> x = 1.6 / 0.4 = 4
Therefore:
y = 3 * 4 = 12
There are 4 quarters and 12 nickels.