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

(a) โ‚น 3750     (b) โ‚น 75000   (c) 7500   (d) 15000  

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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) โ‚น 3750 (b) โ‚น 75000 (c) 7500 (d) 15000 Now, Total Cost = ๐Ÿ‘๐Ÿ•๐Ÿ“/๐Ÿ’ ๐’— + ๐Ÿ”๐ŸŽ๐ŸŽ๐ŸŽ๐ŸŽ๐ŸŽ/๐’— Putting v = 80 = ๐Ÿ‘๐Ÿ•๐Ÿ“/๐Ÿ’ ร— ๐Ÿ–๐ŸŽ + ๐Ÿ”๐ŸŽ๐ŸŽ๐ŸŽ๐ŸŽ๐ŸŽ/๐Ÿ–๐ŸŽ = 7500 + 7500 = Rs 15,000 So, the correct answer is (d)

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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.