A train travels 136/3 km every hour for the first 7/2 hours after leaving a station. After that it travels 101/2 km every hour for the next 5/2 hours. what distance does the train travel during the six hours?
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43
Speed of a train = 136/3 km per hour
Time = 7/2 hours
Distance =speed x time
= 136/3 x 7/2
=476/3
=158 2/3
Speed=101/2 km per hour
Time=5/2 hours
Speed = 101/2 x 5/2
=505/4
=126 1/4
Therefore, total distance = 158 2/3 + 126 1/4
=476/3 + 505/4
= (1904+1515)/12
= 3419/12
=296 7/12
Time = 7/2 hours
Distance =speed x time
= 136/3 x 7/2
=476/3
=158 2/3
Speed=101/2 km per hour
Time=5/2 hours
Speed = 101/2 x 5/2
=505/4
=126 1/4
Therefore, total distance = 158 2/3 + 126 1/4
=476/3 + 505/4
= (1904+1515)/12
= 3419/12
=296 7/12
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24
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