Answer :

We can consume natural gas for 52.84 years until we run out

Quantity of reserves of natural gas in the world = 6500 tcf

Consumption per year = 123 tcf

To find the number of years the natural gas will last, we will divide the number of reserves of natural gas available to us by the yearly consumption of natural gas. The result will be the number of years before the natural gas reserves run out

The number of years we can consume natural gas:

= Quantity of reserves of natural gas/Consumption per year

= 6500/123 = 52.84

The number of years we can consume natural gas = 52.84 years

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