Everyday Giyan takes his little sister Jaiko from coaching through his car, he leaves his house at the same time and drives at a constant speed Jaiko’s coaching ends at 5:00 pm and Giyan reaches the coaching center at the same time. One day Jaiko left her coaching early and started to head home. After Jaiko has been walking for an hour, Giyan comes across him with his car and then they both get back to their home 40 min earlier than they usually do. How many minutes earlier did Jaiko leave?
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Explanation:
40 minutes early.....rest you can understand.....
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