a girl rides on a bicycle with a speed 10 km per hour for 2 hours and 15 km per hour for 3 hours find the distance moved by her and average speed
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1st case .
speed is 10km/hr
time is 2 hr
so distance will be 10 X 2 is 20km.
2nd case
speed is 15kmph
time is 3hr
so distance will be 15 x 3 it's 45km.
total distance traveled by her will be 45+20 it's 65km(Ans).
and avg speed is total distance by total time.
so avt speed is 65by(3+2)hr
=>65/5
=> 13kmph(Ans).
my answers may not be correct but if it helps u to figure out the problem on our own then plz follow me
speed is 10km/hr
time is 2 hr
so distance will be 10 X 2 is 20km.
2nd case
speed is 15kmph
time is 3hr
so distance will be 15 x 3 it's 45km.
total distance traveled by her will be 45+20 it's 65km(Ans).
and avg speed is total distance by total time.
so avt speed is 65by(3+2)hr
=>65/5
=> 13kmph(Ans).
my answers may not be correct but if it helps u to figure out the problem on our own then plz follow me
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