Question

A car travels 90 km in 2hours.how much time is required to cover 30 km

Answer 1

In 2hrs car travels 90km
Therefore it will travel 30km in 40 min

Answer 2

Answer:

2/3 hours

Step-by-step explanation:

90km            2h             [convert to si units]

30km             X              {cross multiplying}

⇒90,000m              7200s

  30,000m               X

90,000X = 21,60,00,000

X = 21,60,00,000 / 90,000

X = 21600 / 9

X = 2,400 s

{[converting it to the units as per the given question]}

=2,400 / 3600

=24/36

=2/3 h