Jawapan

2014-08-13T17:13:34+08:00
40% x y = 240 
 y= 240 x 100/40
 y= 2400
salah ni..
1.240 divide by 40 2.then darab dengan 100 3.the answer is 600
40/100 DARAB 240 LEPASITU 240 DARAB 100/40 CONTOHNYA; 240 DARAB 100 =24000 BAHAGI 40 =600
2014-08-13T17:37:09+08:00
Y = 240/40 = 6
   =  6×100
   = 600


cara lain:

40% = 240
80% = 240×2
100% = 240×2+(  \frac{1}{2} ×240 )