Question 1154830
a plane travels at 100km/h one way and returns at 165km/h the whole trip takes 30mins. how long does it take to on the 1st trip (100km/h)
----------
The avg speed for the round-trip is 2*100*165/(100+165) = 6600/41 km/hr
-----
---> the 1 way distance = (1/2)*6600/41 km = 3300/41 km
----------
For the outbound part: t = d/r
t = (3300/41)/100
t = 33/41 hours