To determine if \( t = 6 \) is a solution to the inequality \( 90 > 10t \), we can substitute \( t \) with \( 6 \) in the inequality:
\[ 90 > 10 \cdot 6 \]
Calculating the right side:
\[ 10 \cdot 6 = 60 \]
Now the inequality becomes:
\[ 90 > 60 \]
This statement is true. Therefore, \( t = 6 \) is indeed a solution to the inequality \( 90 > 10t \).