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5. a. 36,4 / 20 = x / 1420 x = 36,4 x 14
20 x = 509,6
x = 509,6 / 20
x = 25,48 cm
b. 36,4 / 20 = 24 / y
36,4 y = 20 x 24
36,4 y = 480
y = 480 / 36,4
y = 13,19 cm
6. 2,45 / 1,72 = 21,4 / t
2,45 t = 21,4 x 1,72
2,45 t = 36,808
t = 36,808 / 2,45
t = 15,02 m
7. 9,5 / 17 = 1,66 / a
9,5 a = 17 x 1,66
9,5 a = 28,22
a = 28,22 / 9,5
a = 2,97 m
8. a. 160/240 = 8 / w
160 w = 240 x 8
160 w = 1.920
w = 1.920 / 160
w = 12 cm
b. 160/240 = h / 15
240 h = 160 x 15
240 h = 2.400
h = 2.400 / 240
h = 10 cm