Question

4.
A body, moving in a straight line, covers a certain distance in the following four separate and
independent ways.
(a) half the time is covered with speed y, and the other half of the time with speed V.
(b) half the distance is covered with speed V, and next half distance is covered with speed V.
(c) 1/3rd of the distance is covered with speed Vi and for the remaining distance, the first 1/4" of the
remaining time is covered with speed V, and 3/44 of the remaining time is covered with speed V,
(d) 1/5th of the time is covered with speed V, and in the remaining time, 3/4 of remaining distance
is covered with speed V, and 1/4th of the remaining distance is covered with speed V.
In each of the above four cases find average speed over the entire journey.

plz write the whole working of solution​

Answer 1

Answer:

d

should be your answer