SOLUTION: David has collected $6.50 in nickels and dimes. If he has 75 coins, how many of each kind of coin does he have?
Algebra.Com
Question 43107: David has collected $6.50 in nickels and dimes. If he has 75 coins, how many of each kind of coin does he have?
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
d+n=75
10d+5n=650 & d=75-n then 10(75-n)+5n=650 750-10n+5n=650 or 100=5n or n=20 &
d=75-20 or d=55
proof 10*55+5*20=650 or 550+100=650 or 650=650
RELATED QUESTIONS
David has collected $6.50 in nickels and dimes. If she has 75 coins, how many of each... (answered by josmiceli)
David has 12 coins, he has dimes and quarters. he has 6 more dimes than quarters,how many (answered by jorel1380)
David has 40 coins in his bank. If the coins consists of quarters and dimes and value... (answered by kiru_khandelwal)
Alfred has 62 coins totaling $11.15 in nickels, dimes, and quarters. If he has 30 cents... (answered by FrankM)
Ethan has $1.20 in dimes and nickels. If he has 6 more nickels than dimes, how many of... (answered by CubeyThePenguin)
Joe has 32 coins in nickels and dimes. He has 10 more buckles than dimes and has $2.15 in (answered by ikleyn)
Sharu has $2.35 in nickels and dimes. If he has a total of thirty-two coins, how many of... (answered by drk)
Sharu has $2.35 in nickels and dimes. If he has a total of thirty-two coins, how many of... (answered by nyc_function)
Sharu has 2.35 in nickels and dimes. If he has a total of thirty-two coins, how many of... (answered by TimothyLamb)