self Maths Puzzle

I lost Rs 68 in two races. My loss in the second race is Rs 6 more than my lose in the first race. My friend lost Rs 4 more than me in the second race. Then what is the amount lost by my friend in the second race?

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self Other Question

The total expense of a boarding house is partly fixed and partly variable with the number of boarders. When the number of boarders is 25, then the charge is Rs 70 per head and the same is Rs 60 when the number of boarders is 50. What would be the charge per head if there are 100 boarders? The face of a clock is divided into three parts such that the total hours in the first part, is equal to the sum of the total hours in the other two parts. What is the total hours in the bigger part?