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To determine when you will overtake your brother, we need to find the time it takes for the difference in your walking speeds to cover the distance between you. Since your brother leaves 5 minutes earlier and walks for 40 minutes, he will have covered 40/5 = 8 minutes of distance by the time you leave. You take 30 minutes to walk the same distance, so you gain 30-8 = 22 minutes on your brother every time you both leave. Therefore, you will overtake your brother 22 minutes after you leave, which would be at 7:22 AM.

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You will overtake him at 7h15. As you take 30 minutes to complete the entire distance, you will be exactly halfway after 15 minutes (half of 30 is 15), making it 7h00 + 15 minutes = 7h15. As your brother takes 40 minutes to complete the entire distance, he will be exactly halfway after 20 minutes (half of 40 is 20), making it 6h55 + 20 minutes = 7h15. So, at 7h15 you will both be exactly halfway, the point at which you meet, and thus the point and time at which you overtake him.

Q: You walked from home to school in 30 minutes your brother takes 40 minutes your brother leaves home 5 minutes before you do If I leave at 7h00 at what time will I overtake him?

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