Can someone help me on thisIt’s question number 24

Answer:
d = 24
Step-by-step explanation:
From the information given in the question, we can make the following equation.
81 = 45 + 1.5d
Now we just solve for "d" and get...
1.5d = 81 - 45
1.5d = 36
d = 36 / 1.5
d = 24