3. A scooter travels at a speed of 30 km/hr to cover a certain distance in 4 hours. What should be his speed if he has to travel the same distance in 3 hours? A hotel has sufficient food to host 150 people for 30 days. If 20 people leave, find the number of days the food will last in the hotel. 4.
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Step-by-step explanation:
10 km
If the scooter is travelling at precisely 30km/h in a perfectly straight line.
We know 1 hour=60 minutes
Therefore to calculate the distance traveled in the started fraction of the hour.
∴20 minutes is =
60
20
=
3
1
of an hour or 3.3333%
30km×
3
1
=10km
Therefore 10km is the distance traveled in 20 minutes of travelling at a speed of 30km/h
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