maths.

let the height of father be y
80%y+14=158
y=180

2007-08-16 17:13:20 補充：
Full steps:80%y+14=158 80%y = 158-14 80%y = 144 y = 144÷0.8 y = 180The height of father is 180 cm

y X 80% + 14 =158 so爸爸的身高是 180cm

(y x 80/100) + 14cm = 158cm
80y/100=158-14cm
80y=144x100cm
y=14400/80cm
y=180cm

爸爸的身高是180cm

設爸爸的身高是y,
y * 80% + 14 = 158
0.8y = 144
y = 180
所以爸爸的身高是180 cm.

希望幫到你 :]!

y X 80% + 14 =158