Answer:
36 units
Step-by-step explanation:
Each square present in the graph shows the distance of four units. Now it is defined in the question, that Joe always travelled in a straight line. So first he went to David's house. He travelled seven boxes to reach David's house.
Each box = 4units
So, for 7 boxes,
7 x 4 = 28 units (A)
Now they both went to swimming pool which is at the distance of two units from David's house
So they both travelled two boxes.
Distance from David's house to swimming pool is 2 boxes
Each box = 4units
2 x 4 = 8 units (B)
So total distance Joe travelled = A + B
total distance Joe travelled = 28 + 8
total distance Joe travelled = 36 units
