A car moves with a speed of 90km/h for half an hour 45km/h for 2hrs an

1.	A car moves with a speed of 90km/h for half an hour 45km/h for 2hrs and 60km/h for 1 hrs. Calculate the average speed
Answer» Answer: $\huge\mathfrak{\fcolorbox{purple}{silver}{answer}}$ Total SPEED = 90 +45+60 =195 km Total TIME =1/2+2+1 Average speed = Total speed/Total time $average \: speed = \red{\huge\frac{195}{ \frac{3}{2} }}$ $av = \purple {\huge \frac{195 \times 2}{3}}$ $av = \green {\huge \frac{390}{3}}$ $av = \pink{130 \frac{km}{h}}$ Average speed is 130km/hr