Step-by-step explanation: To find the dimensions of the large box, simply solve for x. x = the length of each side. When dealing with volume there a 3 sides.
Solve for x;
x3 = 27
x multiplied by 3 = 27. Simply divide 27 by 3. 27/3 = 9. Then divide 9 by the amount of sides which is 3. 9/3 = 3.
Start by dividing 84 by 4 and you get 21. Then take 100 and divide that number by 4, and you get 25. There is your answer. The 21 jars of grape jelly are equal to 25% of the number 84. Hope this helps!