Guys please solve it by step-by-step explanation
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Step-by-step explanation:
A और B मिलकर काम पूरा करते हैं = 10 घंटे में
अर्थात् A + B = 1/10 hours
A अकेला उस काम को करता है = 15 घंटे में
Now , A + B = 1/10
1/15 + B = 1/10
B = 1/10 - 1/15
B = (3 - 2)/30
B = 1/30
अतः B अकेला उस काम को 30 दिनों में करेगा ।
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