100000(.20)=20000$ down payment

100000-20000=$<<100000-20000=80000>>80000 remaining

80000(.30)=24000

80000-24000=<<80000-24000=56000>>56000$

# Answer

56000
Question:
Roger bought a house for $100,000.  He was able to pay 20% down, and his parents paid off an additional 30% of the remaining balance.  How much money does Roger still owe on his house?
Answer:
Let's think step by step.

user
56000
Roger bought a house for $100,000.  He was able to pay 20% down, and his parents paid off an additional 30% of the remaining balance.  How much money does Roger still owe on his house?
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