SOLUTION: In a collection of dimes and quarters worth $9.00, the ratio of the number of dimes to the number of quarters is 5:7. How many coins are there in the collecton?
Algebra.Com
Question 638334: In a collection of dimes and quarters worth $9.00, the ratio of the number of dimes to the number of quarters is 5:7. How many coins are there in the collecton?
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
5*.10x+7*.25x=9.00
.50x+1.75x=900
2.25x=9.00
x=9.00/2.25
x=4 is the multiplier.
5*4=20 number of dimes.
7*4=28 number of quarters.
PROOF:
20*.10+28*.25=9.00
2.00+7.00=9.00
9.00=9.00
RELATED QUESTIONS
Two thirds of the coins in a collection of quarters and dimes are quarters. The... (answered by MathTherapy)
A collection of 21 nickels, dimes, and quarters is worth $2.50. There are five fewer... (answered by jorel1380)
Sunita has a coin collection of dimes, quarters, and silver dollars. The number of... (answered by stanbon,ikleyn,MathTherapy)
In a collection of dimes and quarters, the number of dimes is eight less than twice the... (answered by josgarithmetic,ikleyn)
hank has a collection of dimes and quarters worth 4.50 he has 4 more quarters than... (answered by nerdybill)
hank has a collection of dimes and quarters worth 4.50 he has 4 more quarters than... (answered by checkley77)
hank has a collection of dimes and quarters worth 4.50 he has 4 more quarters than... (answered by checkley77)
A coin collection has 22 coins consisting of quarters and dimes. There are two more dimes (answered by lynnlo)
A coin collection has 18 coins consisting of quarters and dimes. There are two more dimes (answered by macston)