Q: A completes $$ {7\over 10}$$ of work in 15 days, then he completes the remaining work with the help of B in 4 days. The time required for A and B together to complete the entire work is

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Option 1 : $$ {10} {2\over 3}\ days$$

Option 2 : $$ {12} {2\over 3}\ days $$

Option 3 : $$ {13} {1\over 3}\ days $$

Option 4 : $$ {8} {1\over 4}\ days $$


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DarrylJamJA DarrylJamJA Tuteehub forum best answer Best Answer 1 year ago
$$ {8} {1\over 4}\ days $$


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