Question 879243
The total value of a collection of dimes and nickels is $2.70.   
If the total number of coins is 39, how many of each type of coin are there?
     Number of dimes: 	x
     Number of nickels: (39-x)
 10x + 5(39-x) = 270 (cents makes sense)
    5x = 75
     x = 15, the number of dimes.  24 Nickels
checking
 {{{10*15 + 5*24}}} = 270cents or $2.70