(a) On vertical axis (representing distance)Measure of 2 block = 6 kmso, measure of 1 block =6/2 =3 kmfrom the graph, total distance travel by Juan =5×3=15 km(b) At 1400, he reached the shop.(c) Time taken to reach the home =speeddistance travel​ =1515​=1 hourso, he will reach home after 1 hour of 1515 , i.e, at 1615