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If a young man drives his vehicle 25 km/hr, he has to spend ₹ 2 per km on petrol. If he drives it at faster speed of 40 km/hr, the petrol cost increas
Question

If a young man drives his vehicle 25 km/hr, he has to spend ₹ 2 per km on petrol. If he drives it at faster speed of 40 km/hr, the petrol cost increases to ₹ 5 per km. He has ₹ 100 to spend on petrol and travel within one hour. The maximum distance he travels is:

A.

20 km

B.

100 km

C.

30 km

D.

50 km

Correct option is C



The maximum value of Z is 30 which is attained at E.
Thus the maximum distance travelled by the young man is 30kms

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