SOLUTION: A jar filled with nickels and quarters contains a total of 50 coins. The value of all the coins in the jar is $6.50. How many quarters are in the jar.
Question 939585: A jar filled with nickels and quarters contains a total of 50 coins. The value of all the coins in the jar is $6.50. How many quarters are in the jar. Answer by srinivas.g(540) (Show Source): You can put this solution on YOUR website! 1 nickle = 0.05 dollars
1 quarter =0.25 dollars
let x be the no of nickles
let y be the no of quarters
total no of coins =50
x+y = 50..............eq(1)
total worth = $ 6.50
x*0.05+y*0.25 = $6.50 ..............eq(2)
Solve: We'll use substitution. After moving 1*y to the right, we get: , or . Substitute that
into another equation: and simplify: So, we know that y=20. Since , x=30.