Quantitative Aptitude Test 110

Test # 110


1.
The fuel charge for running a train at uniform speed over a given distance of 80 km varies as the square of its speed and at 16 km/hr, it is found to be Its. 48 per hour. The fixed charges, ie salaries etc, amount to Rs 300 for every hour of run. What should be the most economical speed?

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Quantitative Aptitude
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pick (someone's) brains
to extract ideas or information from someone for one`s own use
My friend is always picking my brains to get new ideas for his business.

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