SOLUTION: A jar contains nickel and quarters. The number of nickels is 4 less than twice the number of quarters. If the sum is $2.25, find how many quarters are in the jar.
Algebra.Com
Question 1065136: A jar contains nickel and quarters. The number of nickels is 4 less than twice the number of quarters. If the sum is $2.25, find how many quarters are in the jar.
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
n = 2q-4
0.05n+0.25q = 2.25
0.05(2q-4)+0.25q = 2.25
0.10q-0.20+0.25q = 2.25
0.35q = 2.45
q = 7 there are 7 quarters in the jar.
RELATED QUESTIONS
a coin collection consisting of nickels and quarters has a value of $4.50. The number of... (answered by ikleyn,MathTherapy)
A cookie jar contains $7.20 in quarters and nickels. The number of quarters is 2 less... (answered by ankor@dixie-net.com)
a jar contains $10.75 in dimes and quarters. If the number of quarters is seven more... (answered by stanbon)
A coin operated washing machine contains $19.95 in nickels and quarters. If there is one... (answered by drj,MathTherapy)
A box contains $17.70 in nickels, dimes, and quarters. The number of dimes is 8 less than (answered by Paul)
Please help me with this word problem: A change jar contains nickels, dimes and quarters, (answered by josgarithmetic)
a toy savings bank contains $17.30 consisting of nickels, dimes and quarters. the number... (answered by mananth)
A box contains nickels, dimes and quarters worth a total of $2.10. There are twice as... (answered by TimothyLamb)
My piggy bank contains 29 coins, each of which is either a penny, nickel, dime, or... (answered by ankor@dixie-net.com)