To find the average cost per litre of petrol over the three years, we first need to find out how many litres of petrol were bought each year.

1. In the first year, the car owner spent Rs. 4000 and the cost of petrol was Rs. 7.50 per litre. So, the number of litres bought is 4000 / 7.50 = 533.33 litres (approximately).

2. In the second year, the car owner again spent Rs. 4000 and the cost of petrol was Rs. 8 per litre. So, the number of litres bought is 4000 / 8 = 500 litres.

3. In the third year, the car owner spent Rs. 4000 and the cost of petrol was Rs. 8.50 per litre. So, the number of litres bought is 4000 / 8.50 = 470.59 litres (approximately).

Now, we add up the total litres bought over the three years: 533.33 + 500 + 470.59 = 1503.92 litres (approximately).

The total amount of money spent over the three years is Rs. 4000 * 3 = Rs. 12000.

Finally, we find the average cost per litre by dividing the total amount spent by the total number of litres bought: 12000 / 1503.92 = Rs. 7.98 per litre (approximately).

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To find the average cost per litre of petrol over the three years, we first need to find out how many litres of petrol were bought each year.

1. In the first year, the car owner spent Rs. 4000 and the cost of petrol was Rs. 7.50 per litre. So, the number of litres bought is 4000 / 7.50 = 533.33 litres (approximately).

2. In the second year, the car owner again spent Rs. 4000 and the cost of petrol was Rs. 8 per litre. So, the number of litres bought is 4000 / 8 = 500 litres.

3. In the third year, the car owner spent Rs. 4000 and the cost of petrol was Rs. 8.50 per litre. So, the number of litres bought is 4000 / 8.50 = 470.59 litres (approximately).

Now, we add up the total litres bought over the three years: 533.33 + 500 + 470.59 = 1503.92 litres (approximately).

The total amount of money spent over the three years is Rs. 4000 * 3 = Rs. 12000.

Finally, we find the average cost per litre by dividing the total amount spent by the total number of litres bought: 12000 / 1503.92 = Rs. 7.98 per litre (approximately).

Knowee AI · Accepted Answer

To find the average cost per litre of petrol over the three years, we first need to find out how many litres of petrol were bought each year.

1. In the first year, the car owner spent Rs. 4000 and the cost of petrol was Rs. 7.50 per litre. So, the number of litres bought is 4000 / 7.50 = 533.33 litres (approximately).

2. In the second year, the car owner again spent Rs. 4000 and the cost of petrol was Rs. 8 per litre. So, the number of litres bought is 4000 / 8 = 500 litres.

3. In the third year, the car owner spent Rs. 4000 and the cost of petrol was Rs. 8.50 per litre. So, the number of litres bought is 4000 / 8.50 = 470.59 litres (approximately).

Now, we add up the total litres bought over the three years: 533.33 + 500 + 470.59 = 1503.92 litres (approximately).

The total amount of money spent over the three years is Rs. 4000 * 3 = Rs. 12000.

Finally, we find the average cost per litre by dividing the total amount spent by the total number of litres bought: 12000 / 1503.92 = Rs. 7.98 per litre (approximately).

A car owner buys petrol at Rs.7.50, Rs. 8 and Rs. 8.50 per litre for three successive years. What approximately is the average cost per litre of petrol if he spends Rs. 4000 each year?

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