laura has 83 dimes and quarters worth 10dollars and 70 cents how many of each type dose she have
laura has 83 dimes and quarters worth 10dollars and 70 cents how many of each type dose she have.
Let dimes=d
quarters=83 - d
.10d + .25[83 - d] =10.70
.10d + 20.75 - .25d=10.70
-.15d =-10.05
d=-10.05/-.15
d=67 dimes
83 - 67=16 quarters
