Question

If p∨q is true, then what must be true about the truth values of p and q?

Answer 1

Switching the hypothesis and conclusion of a conditional statement and negating both. For example, the contrapositive of "If it is raining then the grass is wet" is "If the grass is not wet then it is not raining." Note: As in the example, the contrapositive of any true proposition is also true.

Therefore, the answer would be:

If I don't spend money, then I don't have it.

Answer 2

Hello there.

If p∨q is true, then what must be true about the truth values of p and q?

Where p and q are statements, "p and q" is false if 
p is false.
Which of the following statements is the contrapositive of "If I have money, then I spend it"?

If I don't spend money, then I don't have it.