SOLUTION: On your desk there are 20 coins, some quarters some dimes, Their value totals $3.05. How many of each coin are there?
This problem is so unlike the others on my sheet. On the ot
Algebra.Com
Question 270832: On your desk there are 20 coins, some quarters some dimes, Their value totals $3.05. How many of each coin are there?
This problem is so unlike the others on my sheet. On the other problems I was always able to start out with 2 equations, but I can't understand where to begin with this one. Could you help me out?
Answer by Greenfinch(383) (Show Source): You can put this solution on YOUR website!
Not being American, can I check that a quarter is 25 of your cents and a dime is 10 of your cents
Assuming this is true.
Let us say there are x quarters and therefore (and this is the important bit)
20 - x dimes
The value is thus 25x + 10(20 - x) = 305
25x + 200 - 10x = 305
15x = 105
x = 7 quarters and therefore 13 dimes
This would be $1.75 in quarters and $1.30 in dimes
RELATED QUESTIONS
on a table there are 20 coins, some quarters and dimes. their value is $3.05. how many of (answered by Lady of the Sith)
On a table there are 30 coins. Some are quarters and some are dimes. Their value is... (answered by user_dude2008,mananth)
On a table there are 20 coins, some quarters and some dimes. There value is $3.05. How... (answered by stanbon)
The total value of some coins is 4.95. If there are 3 times more dimes than quarters,... (answered by CubeyThePenguin,ikleyn)
there are 25 coins in a box, some dimes, some quarters. They have a value of $3.70. How... (answered by mananth)
Thomas has a collection of 25 coins; some are dimes and some are quarters. If the total... (answered by ikleyn)
there are 60 coins in a jar. Some are quarters and some are dimes. The total value is... (answered by mananth,greenestamps)
in your pocket you have some nickels, dimes, and quarters. there are 20 coins altogether... (answered by richwmiller)
A coin purse has 20 coins consisting of dimes and nickles. It totals $1.40. How many... (answered by mananth)