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Algebra

by 2sun3 » Wed Jul 30, 2008 7:24 am
If A travels 3 miles per hour, and B travels 1/3 faster than or greater than A. What is the B's miles per hour? I know the answer but could anyone explain the math behind the answer, which is 4?

Thanks
Last edited by 2sun3 on Wed Jul 30, 2008 12:30 pm, edited 1 time in total.
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by sudhir3127 » Wed Jul 30, 2008 7:29 am
B = 4/3 A (1/3 faster is 4/3)
= 4/3*3= 4

hope its clear...
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Thanks Sudhir

by 2sun3 » Wed Jul 30, 2008 7:45 am
Thanks sudhir can you help me understand it by writing the explanation.
That'll be great.
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by preetha_85 » Wed Jul 30, 2008 10:48 am
Hi ..

Assume A travels at xkm/hr....
B travels 1/3rd faster than A i.e (As spped + (1/3)As speed )
=4/3(As speed)
=(4/3)*3 =4

Hope this clear..
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Thanks Preetha

by 2sun3 » Wed Jul 30, 2008 12:56 pm
How did you get 4/3 as A's speed? Can you explain?

Thanks
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Re: Thanks Preetha

by parallel_chase » Wed Jul 30, 2008 12:59 pm
2sun3 wrote:How did you get 4/3 as A's speed? Can you explain?

Thanks
4/3 is not A's speed, its (4/3)*A's speed

if A's speed is 3 miles/hr, and B's speed is 1/3 faster than A's speed.

Then B's speed is (1+1/3) of A's speed

4/3 * (A's speed) = 4 miles/hr

Hope its clear.
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Thanks guys

by 2sun3 » Thu Jul 31, 2008 6:37 am
Thanks guys for your help.

I'll just want to recap on it to see if i understood it correctly.

If A's speed is 3 miles per hour and B's speed is 1/3 greater than A.
Then assuming if A's speed was 1 Then B's speed would be 1+1/3 = 4/3
But for A's speed=3 then B's speed would be 4/3*3 = 4.

Is that right?
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by sudhir3127 » Thu Jul 31, 2008 6:40 am
Ur right...!!!

i am glad we all were a help to you...

thanks parallel !!
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