5. Kalpana can do a particular work in 6
days. Preeti can do the same work in 8
days. Both agreed to do it for Rs. 3200.
They completed the work in 3 days with
the help of Mini. How much is to be paid
to Mini?
(a) Rs. 380
(b) Rs. 600
(c) Rs. 420
(d) Rs. 400
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(d) Rs. 400
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