13) Country club has an indoor swimming club. 30% of members of a swim club passed the lifesaving test. Among the members who have not passed the test, 12 have taken the preparatory course and 30 have not taken the test. How many members are there in the swim club?
a) 60
b) 80
c) 110
d) 120

• a) 60
  If total number of members=x
  % of members not passed lifesaving test=x-(30/100)x=7x/10=12+30
  7x/10= 12+30, so x=60
• 11 years agoHelpfull: Yes(1) No(0)