1,08•30,5-9,72:2,4

Let's solve the expression step by step.

The expression you provided is:

\[ 1.08 \cdot 30.5 - 9.72 \div 2.4 \]

1. Calculate \( 1.08 \cdot 30.5 \): \[ 1.08 \cdot 30.5 = 32.94 \]

2. Calculate \( 9.72 \div 2.4 \): \[ 9.72 \div 2.4 = 4.05 \]

3. Now subtract the second result from the first: \[ 32.94 - 4.05 = 28.89 \]

Thus, the final answer is: \[ 28.89 \]