Question

The number of refrigerators of Quality A is approximately what percent of the total number of ovens (both Quality A and B together)?

• A. $39\%$
• B. $31\%$
• C. $35\%$
• D. $43\%$
• E. $49\%$

Answer 1

The correct option is D $43\%$

Total $=500units$
$\begin{array}{cc}QualityA& QualityB\\ Fans=500\times \frac{1}{5}\times \frac{65}{100}=65& Fans=500\times \frac{1}{5}\times \frac{35}{100}=35\\ ACs=500\times \frac{15}{100}\times \frac{2}{3}=50& ACs=500\times \frac{15}{100}\times \frac{1}{3}=25\\ Refrigerators=500\times \frac{1}{4}-40=85& Refrigerators=40\\ Ovens=200-20=180& Ovens=200\times \frac{10}{100}=20\end{array}$
Total Ovens $=500–(65+35+50+25+85+40)=200$
Required percentage $=\frac{85}{200}\times 100=43\%$