Quantity A -
Distance between them will be equal to relative speed multiplied by time.
Relative speed = 27.5 - 24 = 3.5 km / hr
Time = 24 minutes =
=
hours.
Distance = 3.5 × (
) = 1.4 km
Quantity B -
Probability of getting at least one head = 1 - probability of getting no heads.
When 3 coins are thrown, then can be 8 cases out of which only 1 case (T, T, T) will not have heads
Probability =
1− =
= 0.875
Probability of getting sum of 5 or more = 1 - probability of getting sum 4 or less.
Cases with sum 4 or less than 4 = (1, 1) (1, 2) (1, 3) (2, 1) (2, 2) (3, 1) = 6
Probability =
1− = 5 / 6 or 0.833
Quantity B - Sum = 0.875 + 0.833 = 1.708 approx.
Hence, Quantity A < Quantity B