Abackstroke swimmer on the brown middle school swim team is required to spend at least 70% of his or her total laps practicing backstroke. the following table shows the total laps and number of backstroke laps for 5 swimmers.

name
number of backstroke laps
total number of laps
jeff
41
60
dean
39
55
dave
32
45
cindy
47
65
debbie
37
50
how many swimmers met their goal? round to the nearest percent.

swimmers