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Three identical outlets drain a full tank in 10 hours. How long would five such outlets take?

Competition practicePipes & Cisterns

A2 h
B8 h
C6 h
D $16 \frac{2}{3} h$

Step-by-Step Solution

Work

= 3 \times 10 = 30

outlet-hours;

\frac{30}{5} = 6

h

. (16 \frac{2}{3}

h wrongly makes more outlets slower.)

Answer: C) 6 h

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