Question
Komal and Seema individually can complete a task in
‘3a’ hours and ‘7a’ hours respectively. If they together can complete (2/3)rd of the work in 7 hours, then find the value of ‘a’.Solution
According to the question, => 7 x [(1/3a) + (1/7a)] = 2/3 => 7 x (10/21a) = 2/3 => a = 5
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