A gives a start of 100m to B and finished a race of 1 km in dead heat. Find the ratio of their speed.

6 : 7 4 : 5 10 : 9 9 : 10

10 : 9

A                              B Distance         1000m                      900               ⇒         10           :             9 When time is same, then speed is directly proportional to distance. Therefore,  Ratio of speed ⇒ 10            :             9