big trouble occur when overheating and failure of cooling system happens at the same time. 0.15 * 0.11 = 0.0165

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let the time taken by a train when it takes 60kmph is when it takes 50kmph will be (x+15) So distance, 60x=50(x+15) X=75 mins Distance= Speed * Time = (60* 75)/60 (Convert minutes to hours by dividing with 60)

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1000(1+r/100)2=1440 So the answer is 20%

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the maximum possible combinations for the name rachit is: 6!=720 (as there are no repeated words) now for r to start in dictionary we have to go through a,c,h and i so.. a+4 other cominations of words = 5 cominations =120 similarly for c,h,and i total=120+120+120+120=480 + first word that is rachit... hence answer is 481

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S.P=(8000*10/100)-1200

=7200-1200

=6000.

C.P=(100/100+PROFIT PERCENTAGE)*S.P

=(100/120)*6000

=5000.