Question

Quanto é:
20% de 500
15% de 800
25% de 500
12% de 350
10% de 200 ((façam as contas pfvr))

Answer 1

$\frac{20}{100} .500 = \frac{100}{1} = 100 \\ \\ \frac{15}{100} .800 = \frac{120}{1} = 120 \\ \\ \frac{25}{100} .500 = \frac{125}{1} = 125 \\ \\ \frac{12}{100} .350 = \frac{4200}{100} = 42 \\ \\ \frac{10}{100} .200 = \frac{20}{1} = 20$
Espero ter ajudado

Answer 2

OI

a) 20% de 500

100%-----------500

20%-----------x

100.x = 20.500

100x = 10.000

x = 10.000/100

x = 100

b) 15% de 800

100%------------800

15%--------------x

100.x  = 15.800

100x = 12.000

x = 12.000/100

x = 120

c) 25% de 500

100%--------------500

25%---------------x

100.x = 25.500

100x = 12.500

x = 12.500/100

x = 125

d) 12% de 350

100%-----------350

12%------------x

100.x = 12.350

100x = 4.200

x = 4200/100

x = 42

e) 10% de 200

100%--------------200

10%---------------x

100.x = 10.200

100x = 2000

x = 2000/100

x = 20

Bons estudos