carl has $9 more than david does.hilbert has 1/3 of the amout of carl.if they have a total amout of $61,how much does each of them have?
人气：124 ℃ 时间：2020-04-10 02:19:28
解答
Let $x be the amount of Carl has,$(x-9) be the amount of David has and $(x/3) be the amount of Hibert. x+(x-9)+(x/3)=61 7x-27=183 7x=210 x=30 Carl has $30,David has $21 and Hibert has $10
