There are 23 coins in a bank. All the coins are dimes and quarters. The total value of the coins is $3.80. How many dimes are there? How many quarters?

Write the system of equations that would be used to solve this problem.

Question

There are 23 coins in a bank. All the coins are dimes and quarters. The total value of the coins is $3.80. How many dimes are there? How many quarters?

Write the system of equations that would be used to solve this problem.

anonymous · Answer

4x = 10y
4x + 10y = 3.8
x + y = 23

now just solve it,

:))

anonymous · Answer

yaay

valpey · Answer

10d+25q = 380
d+q=23
-10d-10q=-230
10d-10d+25q-10q = 380-230
15q = 150
q = 10
d = 13