Thinking Skills
A breeder has 140 female rabbits. All but 6 have had litters this year. None had more than two litters. In to…
Question 1 · Multiple choice
Question
A breeder has 140 female rabbits. All but 6 have had litters this year. None had more than two litters. In total 202 young were born. How many rabbits had exactly one litter?
Options
- A. 58
- B. 66
- C. 74
- D. 82
Correct answer
B. 66
Explanation
Out of 140 rabbits, all but 6 had litters. So the number of rabbits that had litters is: 140 - 6 = 134 Let: x = rabbits with exactly 1 litter y = rabbits with exactly 2 litters Then: x + y = 134 because 134 rabbits had litters altogether. The total number of young born was 202, so: x + 2y = 202 Now subtract the first equation from the second: (x + 2y) - (x + y) = 202 - 134 y = 68 So 68 rabbits had 2 litters. That means: x = 134 - 68 = 66 So 66 rabbits had exactly one litter.