Answer:
it has to be 45%
Step-by-step explanation:
Find out what part (fraction) of the choir's members are men. That is 18/40, or 9/20. Write 9/20 as a percent. Use equivalent fractions: 9/20 = 45/100 = 45%.
1.8%
because 1 percent is 0.2, so 0.2 times 9 is 1.8
