Susan buys her lunch in the cafeteria each day for a week. On Monday she spends $1.50, on Tuesday $2.25, on Wednesday $1.76, on Thursday $2.24, and on Friday $3.42. How much money does Susan spend on lunch this week?

The answer to your question is $11.17

Step-by-step explanation:

Data

Monday $1.50

Tuesday $2.25

Wednesday $1.76

Thursday $2.24

Friday $3.42

Process

1.- Sum up all the data, the result will be the answer

                      1.50

                      2.25

                  +   1.76

                      2.24

                      3.42

                   $ 11.17          

2.- Conclusion

Susan spent $11.17 on lunch this week

so, converting firstly the mixed fractions to improper fractions and then "adding".