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 Forum Index >  Test Paper Related >  Primary 4 Matters
 p4 Maths question - please help. tks.
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By: tangara (offline)  Monday, August 01 2011 @ 06:08 AM CDT (Read 941 times)  
tangara

Hi experts,

Please help me with below question:

The vol of water in Bottle A is thrice that in Bottle B.

After 35.35liter of water was poured out of Bottle A and
10.19liters of water was added to Bottle B, there was
an equal volume of water in both bottles.

Find the volume of water in Bottle A at first.

Tks.

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By: YTNg (offline)  Monday, August 01 2011 @ 09:26 PM CDT  
YTNg

At first,

Bottle A : 3 units
Bottle B: 1 unit
Total 4 units

Now,
Bottle A : 1 unit + 35.35
Bottle B : 1 unit + 10.19

2 units = 35.35+10.19 = 45.54 litres
1 unit = 45.54 / 2 = 22.77 litres

Bottle A had 3 units x 22.77 litres = 68.31 litres at first.

Not sure if my analysis logical?

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By: tangara (offline)  Tuesday, August 02 2011 @ 09:44 PM CDT  
tangara

Yes. The answer is correct. Thanks.

I got to learn another method; like the Algebra method:


3 units - 35.35liters = 1 unit + 10.19 liters

And it will work out the same answer.


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