To solve the problem, we need to find out what number \( x \) 150 is 25% of.
The equation can be set up as: \[ 150 = 0.25 \times x \]
We can rearrange this equation to find \( x \): \[ x = \frac{150}{0.25} \]
Calculating this gives: \[ x = 150 \div 0.25 \] \[ x = 150 \times 4 = 600 \]
So, 150 is 25% of 600.
Now, without the specific work shown by each student (Bill, Yasmin, Isabella, and Liam), I can’t determine which student has the correct work. If you provide the methods they used, I can help identify which one is correct.