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Sagot :
Answer:
36 days
Step-by-step explanation:
The answer is the lcm of (9,12)=36 days
- Alex runs in every 9 days
- Alex swims in every 12 days
We have to find LCM of 9 and 12
2 | 9,12
2 | 9,6
3 | 9,3
3 | 3,1
LCM=2×2×3×3=4×9=36
Today is 36 th day
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