Question

Elsa just put 11.47 grams of fuel into her car are there were 6.7 gallons in the car to begin with how much fuel is in Elsa's car now

Answer 1

Sum the two given amount of gallons as follow:

11.47

+ 6.70

18.17

where you have considered that you order the number related to the decimal point and the you sum.

Hence, Elsa's car hsa 18.17 gallons of fuel now.