Q. 215.0( 1 Vote )

If a 20-year-old

Answer :

Let the distance covered at 25km/h be ‘x’ km and distance covered at 40 km/h be ‘y’ km

We have to maximize distance i.e. Z = 25x + 40y

Given, Total amount = 200 Rs

Rate of petrol at 25km/h = Rs 4/km

Rate of petrol at 40km/h = Rs 5/km

4x + 5y = 200

Also, as distance is always positive

We have, x ≥ 0 and y ≥ 0

Let the plot the region on graph,


Therefore, value is maximum at (0, 30), therefore she should travel 30 km at 40km/h

Value shown: Sustainable use of petrol so that future generation can also avail the use of petrol.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses

A manufacturer prMathematics - Board Papers

A retired person Mathematics - Board Papers

A manufacturing cMathematics - Board Papers