Posted by Anonymous on Sunday, February 5, 2012 at 1:38pm.
Bobby has only pennies, dimes, and quarters. One half of Bobby's coins are pennies. One fourth of coins are quarters. Three of his coins are dimes. How many coins does Bobby have?

math  Ms. Sue, Sunday, February 5, 2012 at 1:41pm
Let x = total number of coins.
1/2x + 1/4x + 3 = x
3 = x  3/5x
3 = 1/4x
3 / (1/4) = x
3 * 4 = x
12 = x

math  Reiny, Sunday, February 5, 2012 at 1:43pm
let the number of coins he has be x
x/2 + x/4 + 3 = x
times 8
4x + 2x + 24 = 8x
2x = 24
x = 12
12/2 = 6 pennies
12/4 = 3 quarters
+ 3 dimes
= 12 coins
(A better question would have been:
How much money does Bobby have with his coins? )
Answer This Question
Related Questions
 4th grade  Bobby has only pennies, dimes, and quarters. One half of Bobby's ...
 Math  There are 52 coins that consists of pennies, dimes, and quarters. Two ...
 5th grade math  I need to use quarters, dimes, nickles and pennies to make the ...
 Math  rick has a box of coins. The box contains 51 coins. Which consist of ...
 MATH  Rick has a box of coins .The box currently contains 51 coins, consisting ...
 Math  Cindy had $1.08 using 9 coins. She had as many pennies as dimes. ___ ...
 fractional parts of a number  Malcom has 200 coins.If onefourth of coins are ...
 Math problem I need help with  Combination of coins that can be used; fifty...
 Stats  You are asked to draw THREE coins from a jar one at a time without ...
 Math  Shirley has 18 coins. One sixth of the coins are quarters, one third of ...
More Related Questions