Respuesta :

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.