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Answer :
Final answer:
A car which travels 43 miles on one gallon of petrol can travel 301 miles on seven gallons. It would take the car 30 minutes to cover the same distance at 120 km/h which it covers in 45 minutes at 80 km/h. A poultry man, who collects 56 eggs in a week, can collect 56*n eggs in n weeks.
Explanation:
1. If a car travels 43 miles with 1 gallon of petrol, the car will travel[tex]43*7 = 301 miles[/tex] with 7 gallons of petrol.
2. If a car covers a certain distance in 45 minutes while traveling at 80 km/h, it will cover the same distance at 120 km/h in less time as the speed has increased. The time can be calculated as the ratio of the two speeds (80/120) times the original time (45 minutes). Therefore, the time taken will be [tex](80/120)*45 = 30 minutes.[/tex]
3. If a poultry man collects 56 eggs in a week, the number of eggs he can collect will be contingent on the weeks. Therefore, in n weeks, he will collect 56*n eggs.
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Answer: 2.) 301 miles (3) 30 minutes
Explanation:
2)
Distance traveled per gallon of petrol = 43 miles
Distance traveled on 7 gallons ;
43 × 7 = 301 miles
3)
time taken to cover distance = 45minutes = 45 / 60 = 0.75 hour
Speed of travel = 80km/hr
Recall:
Distance = Speed × time
Distance = 80km/hr × 0.75hr = 60km
Therefore, time required to cover the same distance at 120km/hr equals :
Time = distance / speed
Time = 60km / 120km/hr = 0.5 hr
= 0.5 × 60 = 30 minutes
