Question

Lily takes 3 hours to travel from place A to place B at the rate of 60 Km per hour.
She takes 2 hours to travel from place B to C with 50% increased speed. Find the
average speed from place A to C.

Answer 1

Answer:

72Km/Hr

Step-by-step explanation:

From A to B she travelled with 60km/hr for 3hrs.

So, distance covered from A to B is 60*3 = 180Km

From B to C she travelled with 50% increased speed (i.e., 60 + 60(50/100) = 90km /hr) for 2hrs.

So, distance covered from B to C is90*2 = 180Km.

Total Distance from A to C = 180+180 = 360Km

Total Time from A to C = 3+2 = 5Hrs

Average speed = Total Distance / Total Time Taken = 360/5 = 72Km/hr