一家子工资75000刀,爹比儿子多挣50%,比娘多挣20%,求爹比儿子多挣多少。 <v2> 全家father mother and son 挣 37500 (还是375000..不太记得了..) father 挣 50% more than son, and father 挣 20% more than mother. how much more father 挣 than son earn? 答案好像10,000 参考答案:10,000刀 思路: 设爹工资x, 得x/(1+50%)(儿子工资×【1+50%】=x)+x/(1+20%)(娘工资×【1+20%】=x)+x=75000=>5x/2=75000=>x=30,000; 儿子工资=2/3×30,000=20,000 爹-儿子=30,000-20,000=10,000