Maria and her sister Louisa leave home at the same time and ride their bicycles to school 9 kilometers away. Maria rides at a rate of 3 kilometers in 10 minutes. How long will it take her to get to school?
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Total distance= 9km
Speed of Maria= 3km/min
=3×60km/hr
=180km/hr
Speed=Distance/time
180= 9/time
time= 9/180
= 1/20hr
=3min
Time taken by Lousia in traveling 1km= 3min
=1/20 hr
speed= distance/time
= 9×20km/hr
=180km/hr
As 180km/hr = 180km/hr
Therefore, both of them have same speed and will reach the school at the same time....
let me know if the answer is correct. :)
Speed of Maria= 3km/min
=3×60km/hr
=180km/hr
Speed=Distance/time
180= 9/time
time= 9/180
= 1/20hr
=3min
Time taken by Lousia in traveling 1km= 3min
=1/20 hr
speed= distance/time
= 9×20km/hr
=180km/hr
As 180km/hr = 180km/hr
Therefore, both of them have same speed and will reach the school at the same time....
let me know if the answer is correct. :)
jeromeviju111:
Louisa rides at a rate of 1 kilometer in 3 minutes. How long will it take her to get to school?
Who arrives at school first?
please answer
Louisa speed= 1km/3min
=333.34km/m (approx)
not km... m
time= distance/speed
time= 9/ 1/3
Wait I'll edit the answer.... it's difficult
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