Answer:I would say that the answer is 700 is the answer is incorrect my apologies.
Step-by-step explanation: Ms.Li spent $840 on vacation, She spent 2/3 of the amount on a train ticket and 1/2 of the remaining amount on food. How much did she spend on ticket and food altogether= 840 2/3 = 560
840-560 = 280
half of 280 = 140
560+140 = 700