a) 140 cubic feet/sec
b) 440 cubic feet/sec
c) 700 cubic feet/sec
d) 2200 cubic feet/sec
Answer: c
Explanation: Volume of water flown into the tank in 5 min :
$$\eqalign{
& = \left( {\frac{{22}}{7} \times 100 \times 100 \times 7} \right){\text{cu}}{\text{.feet}} \cr
& = 220000\,{\text{cu}}{\text{.feet}} \cr} $$
Rate of flow of water :
$$\eqalign{
& = \left( {\frac{{220000}}{{5 \times 60}}} \right){\text{cu}}{\text{.feet/sec}} \cr
& = 733.3 \approx 700\,{\text{cu}}{\text{.feet/sec}} \cr} $$
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