题目

The topic of money is often seen as a difficult area by adults. There is so much to learn and so much to control. That's the main reason why a lot of adults are in debt. As with anything worth learning, the best and most well-received knowledge comes to us when we're children. 【1】Start your kids saving money from a very early age, and it will become a habit, a normal, even an easy thing to do. Make saving a fun and positive experience. 【2】 Show kids how you are saving your money too. Just as adults become strong and successful with goal setting, kids benefit from setting their own goal完成一项工程，甲单独做需10天完成．甲乙共同做了两天后，还需乙队再做10天也可以完成，现在甲先做6天后，再由乙队单独做，需要多少天乙队才能完成任务？