To find out what percentage Vinh has saved towards the standing mixer, you can use the following formula:
\[ \text{Percentage Saved} = \left( \frac{\text{Amount Saved}}{\text{Total Cost}} \right) \times 100 \]
In this case, the amount saved is $160 and the total cost is $400. Plugging in these values:
\[ \text{Percentage Saved} = \left( \frac{160}{400} \right) \times 100 \]
Calculating the fraction:
\[ \frac{160}{400} = 0.4 \]
Now, multiply by 100 to get the percentage:
\[ 0.4 \times 100 = 40 \]
Therefore, Vinh has saved 40% of the total cost of the standing mixer.
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