A coin purse contains a mixture of 33 dimes and quarters. The coins have a total value of $6.45. For the following problems, Use x for the number of dimes and y for the number of quarters.

Question

anonymous · Answer

A)Write a mathematical expression for the total number of coins. 
B)Write a mathematical expression for the total monetary value in the purse. 
C)How many dimes are in the coin purse?

ranga · Answer

No. of dimes + No. of quarters = 33 
x + y = 33 

The value of x dimes is: 0.10 * x dollars 
The value of y quarters is: 0.25 * y dollars 
Total value = .1x + .25y = 6.45

A) x + y = 33 
B) .1x + .25y = 6.45

For C) use the equations in A and B, eliminate y and solve for x

anonymous · Answer

i get x is 12

anonymous · Answer

but that isent the right anwser