Linear Equations in two variables

Asked by aruni_maiyer | 16th May, 2010, 03:51: PM

Expert Answer:

As shown below this example is an example of quadratic equation and variables are 3, so can't be solved UNLESS THE SCHEDULED TIME OF THE TRAIN IS GIVEN.

Let U be the uniform speed and T be regular time.

then the distance is D = UT.

If U + 6, then T - 4,

and U - 6, then T + 6,

But the product would still be the same distance, as the distance can't change.

(U+6)(T-4) = (U-6)(T+6)

UT -4U + 6T - 24 = UT + 6U - 6T - 36

10U - 12T - 12 = 0

10U - 12D/U - 12 = 0

10U2 - 12D - 12U = 0

Regards,

Team,

TopperLearning.

Answered by  | 17th May, 2010, 07:39: AM

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