Question

tiana and rei are biking in the same direction on the same path. tiana starts riding a half hour before rei. if rei has been riding for ( t ) hours, how long has tiana been riding?

Explanation:

Step1: Analyze the time difference

Tiana starts 0.5 hours (half an hour) before Rei. When Rei has ridden for \( t \) hours, Tiana has been riding for the time Rei has ridden plus the half - hour head start.

Step2: Formulate the expression

The time Tiana has been riding is \( t + 0.5 \) hours (or \( t+\frac{1}{2} \) hours).

Answer:

\( t + \frac{1}{2} \) (or \( t + 0.5 \)) hours