Difference between revisions of "2018 AMC 10A Problems/Problem 3"
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Convert hours to days: <math>3\cdot 7\cdot 2 = 42</math> days. | Convert hours to days: <math>3\cdot 7\cdot 2 = 42</math> days. | ||
| − | <math>42</math> days after January 1 is <math>\fbox{\textbf{( | + | <math>42</math> days after January 1 is <math>\fbox{\textbf{(D) }\text{February 11}}</math> |
~Nosysnow | wonsysoN~ | ~Nosysnow | wonsysoN~ | ||
Revision as of 14:42, 9 February 2018
Contents
Problem
A unit of blood expires after 
seconds. Yasin donates a unit of blood at noon of January 1. On what day does his unit of blood expire?
Solution 1
There are 
seconds that the blood has before expiring and there are 
seconds in a day. Dividing 
gives 
days. days after January 1 is 
.
Solution 2
.
Convert seconds to minutes: 
minutes.
Convert minutes to hours: 
hours.
Convert hours to days: 
days.
days after January 1 is
~Nosysnow | wonsysoN~
See Also
| 2018 AMC 10A (Problems • Answer Key • Resources) | ||
| Preceded by Problem 2 |
Followed by Problem 4 | |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
| All AMC 10 Problems and Solutions | ||
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions. 
