b) A car travels 90 km in 2.5 hours. (a) How much time is required to cover 30 km
with the same speed? (b) Find the distance covered in 2 hours with the same
speed.
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Answer:
a) 48 mins are required to cover 30 km
b) 72 km would be covered in 2 hours with the same speed.
Step-by-step explanation:
By unitary method:
a)
Distance Time
90 km 2.5 hours
30 km x hours
⇒ x = 30 × 2.5 / 90
⇒ x = 0.8 hours = 48 minutes
b) Distance covered in 2 hours = 90 × 2 / 2.5
= 72 km
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