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For The Mathematically Inclined

Anil Saigal
03/28/2019

Problem 1
Cyclist goes uphill 10 km for 50 minutes and downhill minutes for 29 minutes, both applied to the pedals same force. How long does he to take to cover 10 km on flat land?

Problem 2
What is the weight of a car when it moves on a horizontal road at a speed of v = 50 km/h at engine power P = 7 kW? The friction coefficient is 0.07

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Please send your solutions anil@lokvani.com. 

Use Problem Solutions M-050919 as the subject line. Please include your full name in the text of the main message. Everyone with the right answer will be acknowledged in the next issue of Lokvani. 

Please do not post your solution in Post Comments. No credit will be given for solutions not sent to anil@lokvani.com. 

If you need clarification on any problem, please contact anil@lokvani.com. 

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Problems - 04/25/19

Problem 1
Nine books are to be bought by a student. Art books cost $6.00 each and biology books cost $6.50 each . If the total amount spent was $56.00, how many of each book was bought?

Problem 2
Eva deposit 5250 USD in 100 banknotes in the bank.They had value 5, 20, and 100  USD. How many 100 USD bills did she deposit?


Congratulations to Meena Kaushik and Bharath Venkataraman, who were winners of the last set of puzzles. Here are two problems for one and all! 



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