Your LM should be able to solve this.
Takahasi-kun is planning to buy 4 apples costing 70 yen each and 8 oranges costing 20 yen each, but he was then approached by his next-door neighbour, Mrs Tanaka, who said "Out on an errand? How reliable."
Please answer at what time is Takahashi-kun going home today.
However, do note that Mrs. Tanaka hasn't been in contact with her husband for half a year.