ExamBro
ExamBro
CUET · MATHS · PYQ PAPER 2023

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

  1. A 20 km
  2. B 100 km
  3. C 30 km
  4. D 50 km
Verified Solution

Answer & Solution

Correct Answer

(C) 30 km

Step-by-step Solution

Detailed explanation

Let \(d_1\) be distance at \(25 \, km/hr\) and \(d_2\) be distance at \(40 \, km/hr\). Cost constraint: \(2d_1 + 5d_2 \le 100\) Time constraint: \(\frac{d_1}{25} + \frac{d_2}{40} \le 1 \Rightarrow 8d_1 + 5d_2 \le 200\) To maximize total distance \(D = d_1 + d_2\), we solve the…
From CUET
Explore more questions on app