Final answer:
To pack 21 oranges and 36 apples equally into cartons, you would need 19 cartons.
Explanation:
To solve the problem of packing 21 oranges and 36 apples into cartons with no fruit left:
- Find the greatest common divisor of 21 and 36, which is 3.
- Divide both 21 and 36 by 3 to get 7 oranges and 12 apples.
- The number of cartons needed is the sum of 7 and 12, which is 19 cartons.
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