Asked by Christopher munthali

A woman drove a distance of 100km/h, on the journey she drove 10km/h faster and took 30min less. What was her speed on the outward journey?
Answered by Steve
since time distance/speed,

100/s = 100/(s+10) + 1/2
s = 40
Answered by Christopher
What if she was rolling, anthony?
Answered by Christopher
Steve, i'm still trying to use you way...
Answered by Christopher
Steve, can you explain a bit furthur, please???
Answered by Steve
compare the times.

The time it took to cover 100km at speed s is 100/s

That was 1/2 hour more than the time it took to cover 100km at the faster speed, s+10
Answered by Azeem
Mr. tan makes monthly visits to his parents in Malacca a distance of 240 km from Singapore. he finds that if he increases the average speed by 10km/h, he could save a total of 20min for the journey. find the original speed of Mr. tan.
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