Question 21
Nam, Bình and Châu go to buy three different toys, one toy each. If only Nam buys his toy, their remaining amounts of money are in the ratio 3:6:8. If only Bình buys his toy, the ratio is 1:1:2. If only Châu buys her toy, the ratio is 4:6:5. Ratios are always in the order Nam, Bình, Châu. The three toys cost 540 thousand đồng altogether. What was their combined initial amount of money, in thousand đồng?
