Question

Paul travels from Rye to Eston at an average speed of 90 km/h He travels for T hours.

Mary makes the same journey at an average speed of 70 km/h She travels for 1 hour longer than Paul.

Work out the value of T .

Answer 1

3.5 hours

Explanation:

Paul:

• Speed = 90 km/h
• Time= T hours
• Distance = 90T km

Mary:

• Speed = 70 km/h
• Time = T + 1 hours
• Distance = 70(T+1) km

Since the distance is same, we have:

• 90T = 70(T+1)
• 90T= 70T + 70
• 90T - 70T = 70
• 20T= 70
• T= 70/20
• T= 3.5 hours

Answer: Paul's travel took 3.5 hours