In a recent conference conducted in Alexandria, a total of 4000 people attended it. Of those who attended 40% of them wore masks and 70% of the attendees were males, also 10% of the female attendees didn’t wear masks.

• A. Quantity A is greater. 
• B. Quantity B is greater. 
• C. The two quantities are equal. 
• D. The relationship cannot be determined from the information given.

Answer: B 

Explanation:

Given that the total attendees are 4000.

No. of attendees wore a mask = 40% of 4000 = 1600, So 2400 people didn’t wear the mask.

No. of males = 70% of 4000 = 2800

So, no. of females = 1200

For 2 sets question, use table method,

Given,

From the table, we can find

So, No. of men who wore mask = 520

Quantity B is greater than Quantity A.

Hence the answer is B.

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