Di ketahui x=66,667% dari 63 ; y =87,50% dari 64 dan z = 1/2(x + y),maka x+y+z =...

66,667% = (400/6)% = 400/600
x = 400/600 × 63 = 42
87,50% = (875/10)% = 875/1.000
y = 875/1000 × 64 = 56
z = ½(x+y) = ½(42+56) = 49
x + y + z = 42 + 56 + 49 = 147