Question

The chapter "Speed" has question no. 1 on page no. 11. Explain/Solve.

Answer 1

Distance travelled = Speed × Time taken

Distance travelled in $\frac{1}{2}$ h	=	$80\times \frac{1}{2}$
	=	40 km

Distance travelled in another $\frac{1}{2}$ h	=	$70\times \frac{1}{2}$
	=	35 km

Total distance travelled	=	40 + 35
	=	75 km

The total distance Jack drove was 75 km.