a school sport team contains 68 students, 33 do field events, 40 d0 track event, 23 doswimming, 14 do both field and track events,8 do both swimming and field events.if 15students do field events only

a school sport team contains 68 students33 do field events40 d0 track event, 23 doswimming14 do both field and track events,8 do both swimming and field events.if 15students do field events only and 10 do both swimming and track eventsho w many does [a]swimming only?