Question

mr. Dagondon has twenty pieces of lumber that were all of the same length. If each piece of lumber was 3 1/5 inches long and he put then side by side, what would be the total length of all pieces together?

Answer 1

We have the following:

the first thing is to pass the mixed number to an improper fraction

`3(1)/(5)=(15+1)/(5)=(16)/(5)`

to calculate the sum of all, we must multiply by 20 (the number of total pieces) by the length

`(16)/(5)\cdot20=64`

The total length is 64 inches