Dinesh went from place A to place B and from there to place C. A is 7.5 km from B and B is 12.7 km from C. Ayub went from place A to place D and from there to place C. D is 9.3 km from A and C is 11.8 km from D. Who travelled more and by how much?

Total distance travelled by Dinesh = AB + BC

= 7.5 km + 12.7 km

= 20.2 km

Distance travelled by Ayub from place A to place D = 9.3 km 

Distance travelled by Ayub from place D to place C = 11.8 km

Total distance travelled by Ayub = AD + AC

= 9.3 km + 11.8 km

= 21.1 km

Now comparing the total distance travelled by Dinesh and Ayub, 

$\Rightarrow 21.1>20.2$

Therefore, distance travelled by Ayub > Distance travelled by Dinesh

Difference = (21.1 − 20.2) km

= 0.9 km

= 0.9 × 1000 m

= 900 m.

Thus, Ayub covered 900 m more than Dinesh.