A) 71/2 h
B) 80 h
C) 250/3 h
D) None of these
Correct Answer: C
Solution :
[c] Required time taken to fill the pool \[=\frac{\text{Volume}\,\text{of}\,\text{the}\,\text{pool}}{\text{Part}\,\text{of}\,\text{pool}\,\text{filed}\,\text{in}\,\text{1s}}\] \[=\,\,\frac{70\times 44\times 3\times 100\times 100\times 100}{30800}s\] \[=\,\,300000\,s=\,\,\frac{250}{3}\,h\]
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