Kevin and Randy Muise have a jar containing 80 coins, all of which are either quarters or nickels. The total value of the coins in the jar is $10.80. How many of each type of coin do they have?

Question

welshfella · Answer

a nickel and a quarter I meant

anonymous · Answer

nickel: 5 cent and Dime is 10 cent

welshfella · Answer

and a quarter is 25 cents?

welshfella · Answer

you create 2 equations 
let x be the number of nickels and y the number of quarters
so one equation is 
x + y = 80  (because there are a total of 80 coins)
now consider the values of the coins 
5x + 25y = 1080       (10 dollr 80 =   1080 cents)

welshfella · Answer

so solve for  x + y:

 x +  y = 80
5x + 25y = 1080

welshfella · Answer

(if i'm right about the quarter)