48.In a race Asafa beats Bolt by 12 seconds; Bolt beats Carl by 6 seconds. By how many seconds Asafa beats Carl?
(a) 13 seconds
(b) 11 seconds
(c) 18 seconds
Ans 48: (c) Sol: (A-B) + (B-C) = 12+6 = 18 seconds
In a 2 kilometre race, Vignesh beats Ranajyoti by 100 meters or 20 seconds. What time does Vignesh take to complete the race?