標題:
數學題 QUICK X 100000000000000000
發問:
1) x is 50%=Y. Z is 30% bigger than Y. If X+Y+Z=56. Find Z.2)There is a box of pears. 2.5% of it is rotten. 5.5% is eaten up. 50% of the rest is being sold. There are still 92 pears left behind. Find the original amount of pears in the box.3)From Q1, find the difference between X and Z.4)Class A tea... 顯示更多 1) x is 50%=Y. Z is 30% bigger than Y. If X+Y+Z=56. Find Z. 2)There is a box of pears. 2.5% of it is rotten. 5.5% is eaten up. 50% of the rest is being sold. There are still 92 pears left behind. Find the original amount of pears in the box. 3)From Q1, find the difference between X and Z. 4)Class A tea costs 25% more than class C tea. Class A tea is agaon cost 20% more than class B tea. If class B tea is sold at $5.4 each g, how much will class Ctea cost each g. 更新: klhk23: 1)x=10,y=20,z=26 3)z-x=16 你點知x=10,y=20,z=26 我要式 我夠知答案la 使鬼你教 更新 2: 5好意思 我5記得話 no方程式 更新 3: 快d 快d 如果5是5卑分你地ga
最佳解答:
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1)compare the relationship between X,Y and Z: 2X=Y, Z=1.3Y=2.6X X+Y+Z=56 X+2X+2.6X=56 5.6X=56 X=10 so Z=2.6*10=26 3)the distance between Xand Z: Z-X =26-10 =16 2)Let the number of peans be x. 2.5% of it is rotten,5.5% is eaten up:X(1-2.5%-5.5%)=0.92X 50% of the rest is being sold:0.92X/2=0.46X so 0.46X=92 X=200 Let the number of peans are 200 4) The cost of Class A tea:5.4(1+20%)=$6.48 The cost of Class C tea:$6.48*(1-25%)=$4.86
其他解答:
1)x=10,y=20,z=26 3)z-x=16|||||1.y=0.5x,therefore,x=2y 1.3y=z For all this result,2y+y+1.3y=56 y=56/4.3
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