A) 10
B) 12
C) 8
D) 14
Correct Answer: B
Solution :
If the third tap empties the tanking hours then, 12 \[=\frac{10\times 15\times x}{10x+15x-10\times 15}\] or, \[12=\frac{150x}{25x-150}\] or,\[300x-1800=150x\] or, \[150x=1800\] \[\therefore \]\[x=\frac{1800}{150}\] \[=12\]hoursYou need to login to perform this action.
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