The tour bus had 60 passengers. the survey showed that 20% of the passengers enjoyed the tour. how many passengers enjoyed the tour?
a. 40
b. 30
c. 20
d. 12

The answer is D. My dad taught me an easy way to solve those kind of problems.You need to do (60×20)÷100. And since 60 and 20 both have a zero and 100 has 2 zeros, u can cross out all the zeros and just do 6×2 and divide that by 1 and so 20% of 60 is 12. Hope this helped :)

10.50+10.50=$21
6.75+6.75=$13.50
21+13.50= $33.50