Since he must not exceed 8 hours driving in a day:
Let the distance of the picnic be = x km.
Therefore  time for forward journey  =  x / 60
Return journey                                   =  x / 50
The total trip should not exceed 8 hours.
Therefore:              x / 60 + x / 50  <= 8.      LCM = 300
Taking LCM and multiplying on both sides:
                                5x  +  6x  <=  8(300)
                                       11x    <=  2400
                                           x    <=    2400/11
                                           x   <=  218.18
The picnic spot must be less than or equal to 218.18 km.
        
             
        
        
        
The grams of apples left is 413765 grams
<h3>How to determine the value</h3>
From the information given, we have that:
- There are 36 crates of apples
- Each contains 25 kilograms of apples
- 486,235 grams of apples were sold
If we have 36 crates, let's determine the the total grams of apples
1 crate = 25 kilograms = 25000 grams
36 crates = x
x = 25000 × 36
x = 900000 grams
The total grams of apple is  900000 grams
The grams left = Total - sold =  900000 - 486,235 = 413765 grams
Thus, the grams of apples left is 413765 grams
Learn more about word problems here:
brainly.com/question/1781657
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See the attached picture:
6% = 1200
9% = 2400
12% = 3800
 
        
        
        
Answer:
D. 12
Step-by-step explanation: