Quantity A Quantity B
No. of male attendees who wore mask 800

 

  • 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,

Mask No Mask Total
Male ? 2800
Female 10% of 1200 = 120 1200
Total 1600 2400 4000

 

From the table, we can find

Mask No Mask Total
Male 520 2280 2800
Female 1080 10% of 1200 = 120 1200
Total 1600 2400 4000

 

So, No. of men who wore mask = 520

Quantity B is greater than Quantity A.

Hence the answer is B.

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