Difference between revisions of "2024 AIME I Problems/Problem 1"

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==Problem==
  
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Every morning Aya goes for a <math>9</math>-kilometer-long walk and stops at a coffee shop afterwards. When she walks at a constant speed of <math>s</math> kilometers per hour, the walk takes her 4 hours, including <math>t</math> minutes spent in the coffee shop. When she walks <math>s+2</math> kilometers per hour, the walk takes her 2 hours and 24 minutes, including <math>t</math> minutes spent in the coffee shop. Suppose Aya walks at <math>s+\frac{1}{2}</math> kilometers per hour. Find the number of minutes the walk takes her, including the <math>t</math> minutes spent in the coffee shop.
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==Solution 1==

Revision as of 13:13, 2 February 2024

Problem

Every morning Aya goes for a $9$-kilometer-long walk and stops at a coffee shop afterwards. When she walks at a constant speed of $s$ kilometers per hour, the walk takes her 4 hours, including $t$ minutes spent in the coffee shop. When she walks $s+2$ kilometers per hour, the walk takes her 2 hours and 24 minutes, including $t$ minutes spent in the coffee shop. Suppose Aya walks at $s+\frac{1}{2}$ kilometers per hour. Find the number of minutes the walk takes her, including the $t$ minutes spent in the coffee shop.

Solution 1