Solution: 
We are given below frequency table:
              Amusement-Park      Museum         Broadway-Show         Total
Juniors                57                      21                      42                          120
Seniors                64                     44                      58                          166 
Total                    121                     65                      100                        286
We have to find the percentage of surveyed students who chose the amusement park.
From the table, we see there are total 121 students who chose amusement park out of total 286 students.
Therefore, the percentage of surveyed students who chose the amusement park is given below:

Hence, the option A. 42.30% correct. 
 
        
             
        
        
        
1/4
2/8
4/16
3/12
u can convert fractions into percents by multiplying the first number by the second. hope this helped:))
        
                    
             
        
        
        
you can just split the figure in 2 separate figures and them add the areas:
area rec. 1:
3m×3m= 9m²
area rec. 2: 
3m× (2m+3m)
= 3m×5m
=15m²
total area: 
9m²+15m²= 24m²