Question

Which of the following can be the minimum number of genetically modified rodents that are hamsters?
 

• A. 820
• B. 880
• C. 840
• D. 860
• E. 800

Answer 1

The Correct Option is D

For the rodents:
Let the number of rodents modified as rats be x.
If the genetically modified hamsters must be the minimum possible.
For Purple eyes:
50 – 35% of x ≥ 0
50 ≥ 0.35x
142.85 ≥ x
If x can be a maximum of 140 (since x must be a multiple of 20), then minimum number of genetically modified hamsters = 1000 – 140 = 860

So, the answer must be option D.