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Algebraic translation:

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by florence@help » Thu Mar 04, 2010 10:48 pm
A parking ground has only bikes and cars. When the manager of the parking ground counted the vehicles that were parked in the ground, the number totaled up to 300. However, when the number of wheels was counted, the number totaled up to 640. How many bikes were there in the parking ground?

A. 20
B. 40
C. 80
D. 280
E. 560
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by kstv » Thu Mar 04, 2010 11:08 pm
No of cars be x correspondingly no of wheels = 4x
No of bikes = 300 - x so no of wheels 2(300-x)

4x + 600 - 2x = 680
x = 20 = no of cars

Bikes = 280. Option C.
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by harsh.champ » Fri Mar 05, 2010 1:01 am
Quite a common word translation.


A similar problem can be given replacing cars by tigers and bikes by parrots.
Just take note of the above.
It takes time and effort to explain, so if my comment helped you please press Thanks button :)



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by hooliganpete » Fri Mar 05, 2010 3:52 pm
kstv wrote:No of cars be x correspondingly no of wheels = 4x
No of bikes = 300 - x so no of wheels 2(300-x)

4x + 600 - 2x = 680
x = 20 = no of cars

Bikes = 280. Option C.

kstv: I think you meant the answer is D...
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