SOLUTION: Bob has $2.30 in pennies , dimes and quarters he has 17 coins in total the amount of dimes and pennies are the same . How many pennies dimes and quarters are there?

Question 753784: Bob has $2.30 in pennies , dimes and quarters he has 17 coins in total the amount of dimes and pennies are the same . How many pennies dimes and quarters are there?
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
x = dimes y = quarters
x + y = 17.....1
10x + 25y = 230....2
Multiply (1) by 25
25x + 25y = 425 ....3
10x + 25y = 230 ....2
Subtract (2) from (3)
15x = 195
x = 13
Substitute x = 13 in Eq (1)
x + y = 17
13 + y = 17
y = 17 - 13
y = 4
Therefore you have
:-
13 dimes and 4 quarters
Hope this helps
:-)

RELATED QUESTIONS
Aaron has 7 coins in his pocket there are pennies nickels dimes and quarters not all... (answered by josmiceli)

Otis Taylor has a box of coins that he uses when playing poker with his friends. The box (answered by stanbon,checkley71)

Richardo has a box of coins there are 46 coins consisting of pennies,dimes,and quarters,... (answered by savvyhush23)

Bob has saved quarters, dimes and pennies. He has 7 times as many quarters as dimes, and... (answered by math_helper)

bob has $2.90 in pennies nickels and dimes. he has the same number of pennies and... (answered by lwsshak3)

After collecting coins for her student work project, Margo has counted the coins and... (answered by VFBundy)

Please, Please help me. I just don't understand what to do. I've tried equation... (answered by ptaylor)

Tim has $5.03 in quarters, nickels, dimes, pennies, and half-dollars in a desk drawer.... (answered by ankor@dixie-net.com)

Aaron has 7 coins in his pocket there are pennies nickels dimes and quarters not all the... (answered by josgarithmetic)