conversations.from: human
conversations.value: Gondor is a technician, he earns $10 from repairing a phone and $20 from repairing a laptop. If he was able to repair 3 phones last Monday, 5 phones last Tuesday, 2 laptops on Wednesday, and 4 laptops last Thursday, how much does he earn in total?
conversations.from: assistant
conversations.value: Gondor was able to repair a total of 3+5= 8 phones from Monday to Tuesday.
  And the total amount he earned is $10x8= $80.
  He was able to repair a total of 2+4= 6 laptops from Wednesday to Thursday.
  So, the total amount he earned is $20x6= $120.
  Therefore, the total amount he earned is $120+$80= $200.