lacilebeck3093 lacilebeck3093
  • 12-04-2018
  • Mathematics
contestada

Ryan has some nickels and dimes. altogether, he has 34 coins that total $2.60. write and solve a system of equations to determine how many of each coin he has.

Respuesta :

lauriebethw lauriebethw
  • 12-04-2018
n+d=34
.05n+.10d=2.60

Solve by substitution
n=34-d
.05(34-d)+.10d=2.60
1.7-.05d+.10d=2.60
.05d=.90
d=18 dimes
18+n=34
n=16 nickles

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