Shyoraj travels 132 km at a speed of 33 km/h by bus, 114 km at a speed of 19 km/h using a car, and another 135 km at a speed of 9 km/h by motorbike.  Find his average speed for the entire distance travelled?

15.24

Avg. speed = \(\frac{Total\;Distance}{Total\;Time}\)

                  = \(\frac{132 + 114 + 135}{\frac{132}{33} + \frac{114}{19} + \frac{135}{9}}\)= \(\frac{381}{4 + 6 + 15}\) = \(\frac{381}{25}\) = 15.24