Decide What Values of the Variable Cannot Possibly Be Solutions $\frac { 1 } { 19 } \mathrm {~min}$

question 344

Multiple Choice

Decide what values of the variable cannot possibly be solutions for the equation.
-A water tank can be filled in 9 minutes and emptied in 10 minutes. If the drain is accidentally left open when the tank is being filled, how long does it take to fill the tank?

• A) \(\frac { 1 } { 19 } \mathrm {~min}\)
• B) \(\frac { 1 } { 90 } \mathrm {~min}\)
• C) \(\frac { 90 } { 19 } \mathrm {~min}\)
• D) \(90 \mathrm {~min}\)

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