willie practice boxing three days in a week. he practiced for 3.2 hours on Tuesday., 4.51 hours on Thursday and 6.72 hours on saturday. how long did he practice?
1. what is asked in the problem?
a. the number of practices in a week
b. the number of days willie practiced in a week
c. the number of punches willie did in three days
d. the number of willie practiced in three days
2.what is the operation to be used?
a. addition b. subtraction c. multiplication d. division​