SOLUTION: 1) Stan has 14 bills in his wallet worth $95 altogether. If the wallet contains only $5 and $10 bills, how many bills of each denomination does he have?
2) Libby's drive to work
Algebra.Com
Question 1017916: 1) Stan has 14 bills in his wallet worth $95 altogether. If the wallet contains only $5 and $10 bills, how many bills of each denomination does he have?
2) Libby's drive to work takes 1 hour. If she increases her average speed by 10 miles per hour, the trip takes 3/4 hour. Find the distance she drives to work.
3) Mary and Greta live 21 miles apart. At 1:00 P.M. They start riding their bicycles toward each other and meet at 1:45 P.M. If Greta's average speed is 4 miles per hour faster than Mary's average speed, find Greta's average speed.
4) Margaret gets scores of 88 and 78 on her first two test. What scores must she make on her third test to keep an average of 80 or greater?
5) Sally has 3 times as many nickels as dimes and she has at least 20 coins. At least how many dimes does she have?
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
fivers: f
tenners: t
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
f+t = 14 subtract t from both sides:
f = 14-t we'll use this value for f next
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5f+10t= 95 substitute for f
5(14-t)+10t= 95
70-5t+10t = 95
5t = 25
t = 5 and
f = 14-5 = 9
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Check:
5*10 = 50
9*5 = 49
Total:95 We have the correct answer.
RELATED QUESTIONS
I found a wallet that contained $5 bills and $10 bills. There were 28 bills inside, and... (answered by josmiceli)
A person opens his wallet and finds that all the bills are $1 bills, $5... (answered by josgarithmetic,greenestamps)
A person opens his wallet and finds that all the bills are $1 bills, $5... (answered by stanbon)
Jane has twenty bills in her wallet. She has a total of $80. If she has two more $5 bills (answered by Fombitz)
A person opens his wallet and finds that all the bills are $1 bills, $5 bills, or $10... (answered by josgarithmetic)
A wallet contains $1, $5 and $20 bills. The number of $5 bills is equal to the sum of the (answered by MathLover1)
Saul has a combination of $1, $5, and $10 bills in his wallet worth a total of $75. He... (answered by Boreal)
Tanya has ten bills in her wallet. She has a total of $40. If she has one more $5 bill... (answered by stanbon)
Jonah opens his wallet and finds that all of the bills are $1 bills,$5 bills or $10... (answered by josmiceli,MathTherapy)