Today's task is to work out the average speed of a car journey.

**Question:**

**David travels to work from home. The journey takes 1hr 25mins. The journey is 75km. **

**Calculate David'd average speed in km/h. Give your answer to 3sf.**

**SCROLL DOWN FOR ANSWER BELOW**

*ANSWERS*

**1) Speed = Distance/Time. We must input the values we know which are Distance (75km) and Time (1hr25mins)**

**Therefore, 75 / (1+25/60) . [Remember to write the time as a fraction with 60 as the denominator]**

*This equals 52.9 km/h to 3sf.*