How could i solve this? please help me!

There are 20 coins altogether. and pennies and nickels were the only coins used. The total value is 48 cents. how do i find out how many pennies and nickels were used?

Question

How could i solve this? please help me!


There are 20 coins altogether. and pennies and nickels were the only coins used. The total value is 48 cents. how do i find out how many pennies and nickels were used?

skullpatrol · Answer

Any ideas?

austinl · Answer

This will be a system of equations problem. If that helps.

anonymous · Answer

well i know there is 7 nickels and 13 pennies, I found this out by using a different method but i need to show it using two different methods, they were talking about other methods like system of linear equations and solve by graphing

anonymous · Answer

which one out of those two is easier to solve?

anonymous · Answer

or do you know of any easier methods?

austinl · Answer

$P+N=20\
P=\text{Pennies}\
N=\text{Nickles}$

$0.01P+0.05N=0.48$

So with these we have the system:

$P+N=20$
$0.01P+0.05N=0.48$