Question

What is the ratio between the number of ovens of Quality B and the number of fans of Quality A?

• A. 5 : 2
• B. 4 : 13
• C. 5 : 13
• D. 4 : 9
• E. None of these

Answer 1

The correct option is B 4 : 13

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 ratio = $\frac{20}{65}=4:13$