The answer is: 98.73482 or 9,873.482%
40% + 30% = 70%
5,700 + (40%) = 7,980
40 + (20%) = 48
133.06
(0.3 x 40) + (0.25 x 20) = 17
40% of 300 is 120. So, 300+120=420
12 x (1 + (30/100)) = 15.6 x (1 - (15/100)) = 13.26 x (1 + (40/100)) = 18.564
Wow. Break it down like this. 4 percent of 1000 is 40. 4 percent of a hundred is 4. 4 plus 40 is 44 ok?
40 + 15% = 40 x (1 + (15/100)) = 40 x 1.15 = 46
48 + 40% = 48 x (1 + (40/100)) = 48 x 1.4 = 67.2
it will be (30*300/100)-(40*400/100)+(50*500/100)=500. hope it will help.