- #1
ritwik06
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1. Parag arrives at Pimpri Railway station from office every day at 6:00 p.m.
where Prajakta picks him up in the car to take him home. One day he arrives
at Pimpri one hour early and starts walking towards home. On the way he
meets Prajakta and they return home together in the car. If they arrive the
home 10 minutes earlier then what is the ratio of Parag's walking speed to
Prajakta's driving speed?
Work done by me on this question:
Let distance from station to home= d metres
Driving speed=v1 m/s
Walking speed=v2 m/s
Time taken by car usually=d/v1
according question (if x is the distance traveled by walking),
d/v1={(d-x)/v2}+(x/v1)+600
On solving,
{(d-x)/v1}-{(d-x)/v2}=600
But I can't find the ratio??
2.If a/(b+c) = b/(a+c) = c/(a+b) and a+b+c is not 0 then find value of each
ratio.
Work done:
The answer given in my book is -1. But I don't think that a+b+c will not be
equal to zero in that case?
This is all I could do. Please don't give me answers like show me your work etc. If you know it tell me otherwise dont.
where Prajakta picks him up in the car to take him home. One day he arrives
at Pimpri one hour early and starts walking towards home. On the way he
meets Prajakta and they return home together in the car. If they arrive the
home 10 minutes earlier then what is the ratio of Parag's walking speed to
Prajakta's driving speed?
Work done by me on this question:
Let distance from station to home= d metres
Driving speed=v1 m/s
Walking speed=v2 m/s
Time taken by car usually=d/v1
according question (if x is the distance traveled by walking),
d/v1={(d-x)/v2}+(x/v1)+600
On solving,
{(d-x)/v1}-{(d-x)/v2}=600
But I can't find the ratio??
2.If a/(b+c) = b/(a+c) = c/(a+b) and a+b+c is not 0 then find value of each
ratio.
Work done:
The answer given in my book is -1. But I don't think that a+b+c will not be
equal to zero in that case?
This is all I could do. Please don't give me answers like show me your work etc. If you know it tell me otherwise dont.