Maths-
General
Easy
Question
A car needs 33 litres of petrol to cover a distance of 363 km. Petrol costs · 78 per litre. How much would one spend on a journey of 407 km by car?
Hint:
Hint:
Unitary method: The unitary method is a method in which we find the value of a unit and then the value of a required number of units. For example, If 10 apples cost is 100 rupees, 1 apple will cost 10 rupees and if we are asked to find the cost of 100 apples, we can find it by multiplying 100 with cost of 1 apple.
The correct answer is: 407 km journey
Step 1 of 2:
It is given that the car needs 33 litres of petrol to cover a distance of 363 km.
So, Petrol needed for 363 km of distance = 33 litres
Petrol needed for 1 km of distance = 
litres = 
litres
Step 2 of 2:
Now, Petrol needed for 407 km of distance = 
= 37 litres
Cost of 1 litre petrol = Rs.78
Cost of 37 litres petrol = 78 37 = Rs.2886
Final Answer:
Hence, we need to spend Rs.2886 for a 407 km journey.
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