a) (x – y) 60 T minutes
b) (T – x) minutes
c) $$\frac{{\text{T}}}{{{\text{x}} – {\text{y}}}}$$ minutes
d) $$\frac{{\text{T}}}{{{\text{y}} – {\text{x}}}}$$ minutes
Answer: c
Explanation: Net volume filled in 1 minute
= (x – y) liters
The tank will be filled in
= $$\frac{{\text{T}}}{{\left( {x – y} \right)}}$$ minutes
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