| The Brain Teaser (Answers from page 11) | |
| 1, If each boy in the family has at least 4 brothers, then the smallest number of boys is 5. Similarly, if each girl in the family has at least 3 sisters, then the smallest number of girls is 4. Therefore, the smallest number of children the family might have is 9. |  |
| 2,
The post is 24 ft high – Find the lowest common denominator of ¼ and
⅓, which is 1/12. 3/12+4/12=7/12.
So the exposed 10 ft of post is = to 5/12 of
its total length. 1/12=2 ft, 2x12=24.
I hope I managed to make that reasonably easy to understand. |
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