Answer: 75% 
We know that 1/4 of 24 (25%) is 6, 6 fits into 18 three times and 25 times 3 is 75. So the answer is 75%
 
        
             
        
        
        
Answer:
283.5
Step-by-step explanation:
A=πr^2
A=π(9.5^2)
A=π(90.25)
π x 90.25=283.5 (rounded to the nearest tenth)
 
        
             
        
        
        
They mowed total of 11/15 (5/15 + 2/5) already, so they still have 4/15.