Bunuel While I agree with this solution, I have a quick question.
My mistaken solution was:
Assume the price of the bottle A as 1000, hence bottle B must have been 1200, but it is 1000 still.
So, 1200-1000/1000 * 100 = 20%.
My corrected solution:
And now when I realize the question properly & do it as per cubic cm,
Assume, 1200 as price of bottle A & hence 1.2 is the per cubic cm price; while bottle B's price w.r.t change in volume is 1.0.
Calculating: (1.2-1.0)/1.0 = 16.66%
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I'm finding it lil tricky to understand, what makes both solutions different? Can you help?
Bunuel
A fruit juice company altered its packaging from boxes measuring 5 x 10 x 20 centimeters to boxes measuring 6 x 10 x 20 centimeters. If the price for a box of juice remained unchanged and all boxes are filled to capacity with juice, by approximately what percent did the price of the juice per unit of volume decrease?A. 12.00%
B. 16.67%
C. 18.33%
D. 20.00%
E. 21.50%
Say the price of the box is \($x\).
The original volume was \(5 \times 10 \times 20 = 1,000\) cubic centimeters, so the price per cubic centimeter was \(\frac{x}{1,000}\);
The new volume is \(6 \times 10 \times 20 = 1,200\) cubic centimeters, so the price per cubic centimeter now is \(\frac{x}{1,200}\);
Percent decrease is \(\frac{change}{original} \times 100 = \frac{\frac{x}{1,000} - \frac{x}{1,200} }{\frac{x}{1,000} } \times 100 = \frac{1}{6} \times 100 \approx 16.67\%\).
Answer: B