Originally Posted by

**user_5** A car journey of 300 km lasts 4 h. Part of this journey is on a freeway at an average speed of 90 km/h. The rest is on country roads at an average speed of 70 km/h.

Let T be the time (in hours) spent on the freeway.

a) In terms of T, state the number of hours travelling on country roads.

$\displaystyle 4-T$

b) State:

i. The distance travelled on the freeway in terms of T

Distance Travelled= $\displaystyle 90T$

ii. The distance travelled on country roads in terms of T.

Distance Travelled = $\displaystyle 70(\bold{\color{red}4}-T)$ **<<<<<< typo**

c Find:

i. T

I'm having trouble finding T, Can someone help?

ii The distance travelled on each type of road.