Question

Last week you worked the following hours: Monday, 5½ Wednesday, 6¾ Friday, 4½ How many hours did you work in all last week? A. 16¾ B. 17½ C. 17¾ D. 18½

Answer 1

A. 16¾

Explanation:

We will convert all the mixed fractions to improper fractions.

Monday, 5½ =
`(11)/(2)`

Wednesday, 6¾ =
`(27)/(4)`

Friday, 4½ =
`(9)/(2)`

Now, we will add all these fractions by taking the LCM of denominator.

The LCM of 2,4 and 2 is 4.

We get the following result after addition.

`(11)/(2) +(27)/(4) +(9)/(2)`

=
`(22+27+18)/(4)`

=
`(67)/(4)` hours

In mixed fraction it becomes 16¾ hours.