Explanation

Time for first part = 60 ÷ 40 = 1.5 h

Time for return = 60 ÷ 60 = 1 h

Total distance = 120 km

Total time = 2.5 h

Average speed = 120 ÷ 2.5 = 48 km/h

Last verified on 13-05-2026

Explanation

This is a distance problem using the Pythagorean theorem.

A person moves:

• 80 km North
• 60 km West

These form a right triangle.

Distance from starting point:

d=  √(80^2 + 60^2)

=√(6400 + 3600)

= √(10000) 

= 100 km

Last updated question by NS on 2 MAY 2026

Explanation

Step 1: Convert time into hours

1 hour 30 minutes = $1.5$ hours

Step 2: Use the formula

Speed=Distance/Time​

Step 3: Calculate

Speed=60/1.5​=40 km/h

Last updated by NA on 23-April-2026

Explanation

Given:

Distance = 60 km
Time = 1 hour

Formula:

Speed= Distance/Time

​

Calculation:

Speed=60/1​=60 km/h

Explanation

Time = 19 ÷ 57 = 1/3 hour

Distance at 110 km/h = 110 × 1/3 = 36.67 km

Last verified on 19-04-2026