Question

Escreva na forma percentual cada uma das seguintes razões:
a) 11
20

b) 7
5

c) 21
10

d) 2
3

e) 3⁄4=
f) 13
15

g) 1
5

Answer 1

a) 11/20 ×(5/5) = 55/100 = 55%

b) 7/5 ×(20/20) = 140/100 = 140%

c) 21 /10 ×(10/10) = 210/100 = 210%

d) 2/3 = 0,666... = 66,6%

e) 3⁄4= 0,75 = 75%

f) 13/15 = 0,866 = 86,6%

g) 1/5 = 0,20 = 20%

Answer 2

Oie, Td Bom?!

a)

= 11/20

= 11/20 . 5/5

= [11 . 5]/[20 . 5]

= 55/100

= 55%

b)

= 7/5

= 7/5 . 20/20

= [7 . 20]/[5 . 20]

= 140/100

= 140%

c)

= 21/10

= 21/10 . 10/10

= [21 . 10]/[10 . 10]

= 210/100

= 210%

d)

= 2/3

≈ 0,666667

= 0,6667

= 0,6667 . 100/100

= [0,6667 . 100]/100

= 66,67/100

= 66,67%

e)

= 3/4

= 3/4 . 25/25

= [3 . 25]/[4 . 25]

= 75/100

= 75%

f)

= 13/15

≈ 0,866667

= 0,8667

= 0,8667 . 100/100

= [0,8667 . 100]/100

= 86,67/100

= 86,67%

g)

= 1/5

= 1/5 . 20/20

= [1 . 20]/[5 . 20]

= 20/100

= 20%

Att. Makaveli1996