human
Tim enters a competition and has to try and guess the number of red jelly beans in a jar. The jar has a square base and is 6 inches by 6 inches and 15 inches tall. He knows that a jelly bean is .15 cubic inches. He also knows that they get about 80% efficiency in packing. He estimates 30% of the jelly beans are red. The true number of red jelly beans in the container is 900. How far off was his guess?
assistant
How many cubic inches are in the container? ** The volume of the container is 6*6*15=<<6*6*15=540>>540 cubic inches
How many jelly beans can the container hold? ** That means it can fit 540/.15=<<540/.15=3600>>3600 jelly beans
How many jelly beans can the container hold? ** With 80% packing efficiency, you can fit 3600*.8=<<3600*.8=2880>>2880 jelly beans in there
How many red jelly beans are in the container? ** So that means he guesses 2880*.3=<<2880*.3=864>>864 are red
How far off was his guess? ** So his guess is off by 900-864=<<900-864=36>>36
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