The total cost of the train to travel 500 km at the most economical speed is:

(a) β‚Ή 3750 Β  Β  (b) β‚Ή 75000 Β  (c) 7500 Β  (d) 15000 Β 

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  1. Class 12
  2. Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Transcript

Question 50 The total cost of the train to travel 500 km at the most economical speed is: (a) β‚Ή 3750 (b) β‚Ή 75000 (c) 7500 (d) 15000 Now, Total Cost = πŸ‘πŸ•πŸ“/πŸ’ 𝒗 + πŸ”πŸŽπŸŽπŸŽπŸŽπŸŽ/𝒗 Putting v = 80 = πŸ‘πŸ•πŸ“/πŸ’ Γ— πŸ–πŸŽ + πŸ”πŸŽπŸŽπŸŽπŸŽπŸŽ/πŸ–πŸŽ = 7500 + 7500 = Rs 15,000 So, the correct answer is (d)

Class 12
Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

About the Author

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.