- #1
BrownianMan
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Fred and Frank
: Fred and Frank are two fitness fanatics on a run
from A to B. Fred runs half the way and walks the other half.
Frank runs for half the time and walks for the other half. They
both run and walk at the same speeds. Who finishes first?
So I solved this. Frank finishes first.
Francis joins them and teaches them to jog. Fred now runs onethird
of the way, jogs one-third of the way and walks the rest,
while Frank jogs for on-third of the time, runs for one-third and
walks the rest. Who finishes first?
For this, I also got that Frank finishes first. Is this correct?
“Has Francis helped them to finish sooner or later than previously?”
For this I got:
Frank finishes sooner with joging included if the rate of jogging is greater than (rate of walking + rate of running)/2 and later if rate of jogging is less than (rate of walking + rate of running)/2. Fred finishes faster with jogging included regardless of the rate of jogging.
Is this right?
: Fred and Frank are two fitness fanatics on a run
from A to B. Fred runs half the way and walks the other half.
Frank runs for half the time and walks for the other half. They
both run and walk at the same speeds. Who finishes first?
So I solved this. Frank finishes first.
Francis joins them and teaches them to jog. Fred now runs onethird
of the way, jogs one-third of the way and walks the rest,
while Frank jogs for on-third of the time, runs for one-third and
walks the rest. Who finishes first?
For this, I also got that Frank finishes first. Is this correct?
“Has Francis helped them to finish sooner or later than previously?”
For this I got:
Frank finishes sooner with joging included if the rate of jogging is greater than (rate of walking + rate of running)/2 and later if rate of jogging is less than (rate of walking + rate of running)/2. Fred finishes faster with jogging included regardless of the rate of jogging.
Is this right?