SOLUTION: Robin has a collection of nickels, dimes, and quarters worth $50.50. She has 30 more coins than nickels and twice as many quarters as dimes. How many coins of each does she have?

Question 1047707: Robin has a collection of nickels, dimes, and quarters worth $50.50. She has 30 more coins than nickels and twice as many quarters as dimes. How many coins of each does she have?
Answer by jorel555(1290) (Show Source): You can put this solution on YOUR website!
Let n represent nickels. Then dimes are n+30; and quarters are 2n+60. So:
5n+10(n+30)+25(2n+60)=5050
65n+1800=5050
65n=3250
n=50
She has 50 nickels, 80 dimes, and 160 quarters. ☺☺☺☺
RELATED QUESTIONS
Robin has a collection of nickels, dimes, and quarters worth $37.50. She has 30 more... (answered by ikleyn,greenestamps,josgarithmetic)

Robin has a collection of nickels, dimes, and quarters worth $38.50. She has 10 more... (answered by jorel1380)

Robin has a collection of nickels, dimes, and quarters worth $25.50. She has 10 more... (answered by josgarithmetic)

Robin has a collection of nickles, dimes, and quarters worth $50.50. She has 30 more... (answered by josgarithmetic)

Sarah has a collection of nickels, dimes, and quarters worth $15.75. She has 10 more... (answered by ankor@dixie-net.com)

Sara has a collection of nickels, dimes, and quarters, worth $15.75. She has 10 more... (answered by stanbon)

Sarah has a coin collection of nickels, dimes, and quarters worth $15.75. She has 10 more (answered by josmiceli)

Sarah has a collection of dimes, nickels, and quarters worth $15.75. She has 10 more... (answered by math-vortex)

sarah has a collection of nickels, dimes and quarters worth $12.50. she has 10 more dimes (answered by Alan3354)