Ahmad's car uses 0.06 litres of petrol per km. He drives 15 km one-way to work each day and returns home by the same route, 5 days a week. During the same week he also makes 2 extra trips of 12.5 km each. How many litres of petrol does he use in total that week?
Show Worked Solution
Worked Solution
Step 1: Find daily commute distance (both ways).
15 km x 2 = 30 km per day.
Step 2: Find total commute distance for 5 working days.
30 km x 5 = 150 km.
Step 3: Find total distance for the 2 extra trips.
2 x 12.5 km = 25 km.
Step 4: Find total distance for the week.
150 + 25 = 175 km.
Step 5: Find total petrol used.
175 x 0.06 = 10.5 litres.
Correct answer: 10.5 litres
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