Problem 1.5. Estimate the number of litres of gasoline used by all Pakistan's car each year given: No of cars in Pakistan = 500000. Average distance travelled per year by each car = 16000km gasoline consumption 6km/litre.
Solution:
No. of cars in Pakistan = 500000 = 5 x 10⁵
Average distance/year = 16000km
Gasoline consumption = 6km/litres
No. of liters of gasoline used/year = ?
Gasoline consumed each year by each car =
total distance covered/distance covered per liter
16000/6 = 2666.67 liters
gasoline consumed each year by all cars =
numbers of cars x consumption by each car
5 x 10⁵ x 2666.67 = 1.33 x 109 liters Ans
