SOLUTION: sally has $1.50 worth of change in her pocket-all nickels and dimes. she has three times as many nickels as dimes. find the number of each.

SOLUTION: sally has $1.50 worth of change in her pocket-all nickels and dimes. she has three times as many nickels as dimes. find the number of each.

Algebra.Com

Question 374520: sally has $1.50 worth of change in her pocket-all nickels and dimes. she has three times as many nickels as dimes. find the number of each.
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
.05N+.10D=1.50
N=3D
.05*3D+.10N=1.50
.15D+.10D=1.50
.25D=1.50
D=1.50/.25
D=6 DIMES.
N=3*6=18 NICKELS.
PROOF:
.05*18+.10*6=1.50
.90+.60=1.50
1.50=1.50
RELATED QUESTIONS
Joan has $1.75 worth of change in nickels and dimes if she has three times as many... (answered by Alan3354)

Sally has three times as many dimes as nickels and twice as many quarters as dimes. In... (answered by lwsshak3)

In her purse Anita has 16 coins (nickels,dimes,and quarters), worth $2.05. She has three... (answered by mananth,oberobic)

Sally has 100 coins all of which are dimes, nickels, and quarters. She has $13.00 in... (answered by CubeyThePenguin)

Martha has some nickels and dimes worth $6.25. She has three times as many nickels as... (answered by checkley71)

Kate has $6.00 worth of change in nickels and dimes. If she has 4 times as many nickels... (answered by checkley75)

Ann has $7.20 worth of change in nickels and dimes. If she has four times as many nickels (answered by ewatrrr,Alan3354)

Ann has $3.25 worth of change in nickels and dimes. If she has 3 times as many nickels (answered by josgarithmetic,addingup)

Teresa has $6.00 worth of change in nickels and dimes. If she has 4 times as many... (answered by CubeyThePenguin)