Art of Problem Solving

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==Problem==


<math>(a)</math> Joyce has two identical jars. The first jar is <math>\frac{3}{4}</math> full of water and contains <math>300</math> mL of water. The second jar is <math>\frac{1}{4}</math> full of water. How much water, in mL, does the second jar contain?
==Solution==
Since <math>\frac{3}{4}</math> of a jar is <math>300</math> mL, and because the first jar has 3 times as much water as the second jar (<math>\frac{\frac{3}{4}}{\frac{1}{4}}=3</math>), then the second jar has <math>\frac{300}{3}=\boxed{100}</math> mL of water.
~Baihly2024

Latest revision as of 10:31, 13 October 2025

Problem

$(a)$ Joyce has two identical jars. The first jar is $\frac{3}{4}$ full of water and contains $300$ mL of water. The second jar is $\frac{1}{4}$ full of water. How much water, in mL, does the second jar contain?

Solution

Since $\frac{3}{4}$ of a jar is $300$ mL, and because the first jar has 3 times as much water as the second jar ($\frac{\frac{3}{4}}{\frac{1}{4}}=3$), then the second jar has $\frac{300}{3}=\boxed{100}$ mL of water.

~Baihly2024