11
punti
Livello 0
Grazie!
x : 2/5 = y : 3/8 = z : 5/4
x + y + z = 27/8
(x + y + z) : x = (2/5 + 3/8 + 5/4) : 2/5
27/8 : x = (16 + 15 + 50)/40 : 2/5
x = 27/8 * 2/5 : 81/40 =
= 54/40 * 40/81 = 54/81 = 2/3
analogamente y e z
27/8 : y = 81/40 : 3/8
y = 27/8 * 3/8 * 40/81 =
= 81/64 * 40/81 = 40/64 = 5/8
27/8 : z = 81/40 : 5/4
z = 27/8 * 5/4 * 40/81
z = 135/32 * 40/81 = 5/3 * 4/5 = 4/3
45772
punti
Livello 7
