Math, asked by nayakdeepak40, 15 days ago

7. A bus started its journey from Ramgarh and reached Devgarh in 44 minutes at it's average speed of 50 kmph. If average speed of bus is increased by 5 kmph, how much time will it take to cover the same distance ? (a) 40 min (b) 38 min (c) 36 min (d) 31 min​

Answers

Answered by preethiaushi
1

Answer:

a) 40 min

Step-by-step explanation:

(44 min = 44/60) = 1/15 hr

Let T denotes the time that the bus will take to cover the same distance at higher average speed.

From above data we get as follows,

T*(50 + 5) = (11/15)*50

or 55*T = 110/3

or T = 2/3 (hr) = (2/3)*60 = 40 (min) 

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