Verified Answer :

lolziekween

2 decaliters is equal to 20 liters. 21-20=1.

JannetPalos

Capacity of the gas tank = 21 liters.

Amount of gas used by Eric = 2 decaliters

                                              = 2 × 10

                                              = 20 liters

To find the amount of gas left in the tank, we have to subtract 20 from 21.

So, amount of gas left in the tank = 21 - 20

= 1 liter.

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