A train moves from P to Q at an average speed of 90km/h and immediately returns from Q to P through the same route at an average speed of 45km/h. Find the average speed for the entire journey

Similar Questions

Given that p:q = \(\frac{1}{3}\):\(\frac{1}{2}\) and q:r = \(\frac{2}{5}\), find p:r...

A cuboid has a diagonal of length 9cm and a square base of side 4cm. What is its height? ...

In the diagram, HK is parallel to QR, PH = 4cm and HQ = 3cm. What is the ratio of KR:PR? ...

In how many ways can five people sit round a circular table? ...

In the diagram P, Q, R, S are points on the circle RQS = 30o. PRS = 50o and PSQ = 20o. What is the v...

Simplify 125\(^{\frac{-1}{3}}\) x 49\(^{\frac{-1}{2}}\) x 10\(^0\) ...

The probability that John and James pass an examination are 3/4 and 3/5 respectively, find the proba...

The locus of a point which moves in a plane such that it is equidistant from two fixed points X and ...

XOY is a real sector of a circle center O of radius 3.5cm which subtends an angle of 144o at the cen...

Find the value of the angle marked x in the diagram above ...