Answer :
To find the total length of the trench dug by Indigrid, we add the two fractions representing the lengths dug on separate days. The sum of 18/20 and 9/20 meters is 27/20 meters, which is approximately 1 and 1/3 meters, our estimated total length.
The student is asking about the total length of a trench that was dug in two separate instances. Indigrid initially dug 18/20 of a meter, and on the next day, she dug an additional 9/20 of a meter. To estimate the total length, we simply need to add these two fractions:
First Day: 18/20 meter
Second Day: 9/20 meter
Adding them together:
18/20 + 9/20 = (18+9)/20 = 27/20 meters
Since 27/20 meters is equal to 1 and 7/20 meters, we can say that the total estimated length of the trench is around 1 and 1/3 meters, assuming we round to the nearest simple fraction for estimation.
