Four cars, \(A,B,C\) and \(D\) departed simultaneously from Sungai Buloh to four different towns.
The table shows the average speed and the distance traveled by each car.
Average speed
\((\text{km/h})\)
Distance
\((\text{km})\)
A car moves at a speed of \(90\text{ km h}^{-1}.\)
Find the distance, in \(\text{km},\) travelled by the car in \(100\) minutes.
Zailan cycles \(12\text{ km}\) in \(40\text{ minutes}.\)
Calculate the speed of his cycling.
Nina drove \(10\) minutes from her house to her workplace at an average speed of \(60 \text{ km/h}.\)
When she drove back home, she took \(10\) minutes longer.
Find Nina's average speed, in \(\text{km/h},\) on her return journey.
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