Decide What Values of the Variable Cannot Possibly Be Solutions $\frac { 1 } { 15 } \mathrm { hr }$

question 63

Multiple Choice

Decide what values of the variable cannot possibly be solutions for the equation.
-One maid can clean the house in 5 hours. Another maid can do the job in 3 hours. How long will it take them to do the job working together?

• A) \(\frac { 1 } { 15 } \mathrm { hr }\)
• B) \(\frac { 15 } { 8 } \mathrm { hr }\)
• C) \(\frac { 15 } { 2 } \mathrm { hr }\)
• D) \(\frac { 1 } { 8 } \mathrm { hr }\)

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Definitions:

Rooting Reflex

An automatic response seen in newborns, where they turn their head toward anything that strokes their cheek or mouth.

Moro Reflex

An involuntary reflex found in newborns, characterized by the baby spreading its arms, then unspreading them and crying, usually triggered by a loud sound or sudden movement.

Babinski Reflex

A physical reflex observable in infants, where fanning and curling toes occur when the sole of the foot is stimulated.

Grasping

The reflex action by which infants close their fingers around an object placed in their hand.