Answer:
Dr Cash $500,000
Cr Long-term investment $500,000
Step-by-step explanation:
In order to determine the journal entry to pass when the bond matures,it would appropriate to first of all understand the entries posted when the bond was purchased,which is that cash was credited and long term investment account was debited.
The reverse would be the case at maturity which is that cash account would now receive an inflow,hence debited with $500,000 while the long-term investment certificate is parted with ,as a result the account should be credited as appropriate.