Aisha is filling a large fish tank. The table and graph show the volume v v\,v of water in the tank at time t t\,t minutes.
| Time ttt (minutes) | Volume vvv (litres) |
|---|---|
| 0 | 40 |
| 5 | 115 |
| 10 | 190 |
| 15 | 265 |
| 20 | 340 |
| 25 | 415 |
Work out the rate at which the water is flowing into the tank.
Give your answer in litres per minute.
Practise Edexcel IGCSE Maths Real Life and Distance Time Graphs with exam-style questions for IGCSE Maths. 21 questions, matched to the Edexcel IGCSE Maths (4MA1) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.