|
Solutions to Chapter Problems
Chapter 11 Ratio, Rate and Percent
(p. 249):
| a) |
|
If you estimate, that a person lives about 75 years, on average, then you would multiply 75 by 365.25 by 70. Since an estimate makes sense, you might multiply 80 by 350 by 70 to get 70 x 28 000 = 1 960 000, or about 2 million scalp hairs. This assumes that the rate is pretty constant (which it probably isn’t). |
| |
|
|
| b) |
|
2 million = 20 hundred thousand, so 2 million ÷ 100 000 = 20; the equivalent to 20 heads of hair are lost. |
|
|
