Question

What is the approximate average number of products of Category A together?

• A. 81
• B. 86
• C. 90
• D. 95
• E. 99

Answer 1

The correct option is A 81

Total number of Computers $=600\times \frac{1}{5}=120$
Total number of Televisions $=600\times \frac{1}{3}=200$
Total number of Refrigerators $=280\times \frac{40}{100}=112$
Total number of Mobile phones $=600-120-200-112=168$

Category A,
Computers $=60$
Mobile phones $=84$
Televisions $=150$
Refrigerators $=\frac{112}{4}=28$

Category B,
Computers $=60$
Mobile phones $=84$
Televisions $=150$
Refrigerators $=84$

Required average $=\frac{60+84+150+28}{4}\approx 81$