group of friends decided to go on a trip to Bandarban from Dhaka. They divided the route in 3 equal parts and decided to

[answerhappygod]

group of friends decided to go on a trip to Bandarban from
Dhaka. They divided the route in 3 equal parts and decided to
maintain an average speed of 73 km/h on the way to Bandarban. They
noticed their speed was 84 km/h in the first part and 94 km/h in
the second part.
a. What was the speed for the third part if they maintained the
target average speed?
Answer in exact fraction, or rounded to at least 4 decimal
places
km/h unanswered
b. While returning to Dhaka from Bandarban, they maintained a
speed of 84 km/h. What was the average speed for the entire trip to
and from Bandarban (i.e Dhaka-Bandarban-Dhaka) ?
Answer in exact fraction, or rounded to at least 4 decimal
places.
km/h unanswered
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