Question
dave throws loose change in to a cup an takes it out every 2 weeks
this time it is all nickels and dimes
there are 7 times as many dimes as nickels and the value of dimes is $5.85 more than the value of the nickels
how many nickels and dimes does dave have
this time it is all nickels and dimes
there are 7 times as many dimes as nickels and the value of dimes is $5.85 more than the value of the nickels
how many nickels and dimes does dave have
Answers
D = 7N
.10D - .05N = 5.85
Substitute 7N for D in the second equation and solve for N. Insert that value into the first equation to solve for D. Check by putting both values into the second equation.
.10D - .05N = 5.85
Substitute 7N for D in the second equation and solve for N. Insert that value into the first equation to solve for D. Check by putting both values into the second equation.