Thread: Growth Rate

Time(min) Length
0 12.5mm
5 30mm
10 50mm



How can i work out the growth rate per minute?

Hello el123

Originally Posted by el123

Time(min) Length
0 12.5mm
5 30mm
10 50mm



How can i work out the growth rate per minute?

With more data, you could plot a graph, and draw tangents to the graph at the points where you wanted the growth rate. However, with this small amount of data, you can only work out average rates - there's not really enough data to plot a graph.

In the first minutes the length has increased by mm. So the average rate during this period is mm per minute.

In the second minutes, the length has increased by ...? So the average growth rate is ...?

And, overall, in minutes the average growth rate is ... ?

Can you complete the calculations?

Grandad