Question
Komal and Seema individually can complete a task in
‘2a’ hours and ‘7a’ hours respectively. If they together can complete half of the work in 7 hours, then find the value of ‘a’.Solution
According to the question, => 7 x [(1/2a) + (1/7a)] = 1/2 => 7 x (9/14a) = 1/2 => a = 9
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