Leo runs laps around a track. The table shows how long it takes him to run different numbers of laps. Predict how long it will take Leo to run 7 laps.

Number of Laps 2, 4, 6, 8, 10

Time (Min) 10, 20, 30, 40, 50

It would take him 35 mins

Number of Laps 2, 4, 6, 8, 10

Time (Min) 10, 20, 30, 40, 50

the laps and mins go up at a constant rate.

2-4 is a difference of 2, as they all are

10-20 is a difference of 10, as they all are.

for half way between 6 and 8 is 7 which would be half way between 30 and 40 which is 35 mins

so 7 laps is 35 mins (that's a big track!)