A liter of petrol weighs 0.7 kg. How many liters of water will have the same weight as 10 liters of petrol if 1 liter of water weighs 1 kg?

1 litre of petrol weights .7 kg

10 L of petrol weigh 7 kg

7 L of water weigh 7 kg,

so ....

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To solve this problem, we need to find out how many liters of water will have the same weight as 10 liters of petrol.

First, let's find the weight of 10 liters of petrol. We know that 1 liter of petrol weighs 0.7 kg, so the weight of 10 liters of petrol can be calculated as:

Weight of 10 liters of petrol = 10 liters * 0.7 kg/liter = 7 kg

Next, we need to determine how many liters of water will have the same weight as 7 kg. We know that 1 liter of water weighs 1 kg, so the number of liters of water can be calculated as:

Number of liters of water = Weight of 10 liters of petrol / Weight of 1 liter of water = 7 kg / 1 kg/liter = 7 liters

Therefore, 10 liters of petrol would have the same weight as 7 liters of water.