3 boys have 656 marbles.

Ali has 3 times more marbles than Bala.

Calvin has 34 few than Bala.

How many marbles does Bala have?

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- May 11th 2011, 08:07 PMdroolzWorded problem - getting an equation and solving it.
3 boys have 656 marbles.

Ali has 3 times more marbles than Bala.

Calvin has 34 few than Bala.

How many marbles does Bala have? - May 11th 2011, 08:45 PMTKHunny
Introduce useful notation

Name stuff.

A = # of marbles for Ali

B = # of marbles for Bala

C = # of marbles for Calvin

Now, start translating those sentences.

Let's see what you get. - May 11th 2011, 10:02 PMdroolz
- May 11th 2011, 11:00 PMjohnny
Correct. x + x/3 + (x/3 - 34) = 656, hence x = 414, therefore Bala has 138 marbles.

- May 11th 2011, 11:08 PMdroolz
- May 11th 2011, 11:10 PMjohnny
Solution is provided.

- May 11th 2011, 11:12 PMdroolz
thanks very much.

- May 11th 2011, 11:18 PMdroolz
- May 11th 2011, 11:27 PMjohnny
x + x/3 + (x/3 - 34) = 3x/3 + x/3 + (x/3 - 34) = 4x/3 + (x/3 - 34) = 5x/3 - 34 = 656

5x/3 - 34 + 34 = 656 + 34

5x/3 = 690

(5x/3)(3/5) = 690(3/5) = 414

∴ x = 414

Divide x by 3 to determine correctly that Bala has 138 marbles. - May 11th 2011, 11:32 PMdroolz
oh. i calculated wrongly. no wonder i could not find the exact answer with my formula. Thanks ALOT!!!!