Question

Calcule:
A) 30% de 1500
B) 10% de 120
C) 20% de 980
D) 55% de 300
E) 9% de 4500
F) 100% de 125
G) 1% de 200
H) 110% de 400
Me ajudem ai por favor????

Answer 1

a-

100% ——— 1500

30% ——— x

100x = 45.000

x = 100/45.000

x = 450

b-

100% ——— 120

10% ——— x

100x = 1200

x = 12

c-

100% ——— 980

20% ——— x

100x = 19.600

x = 196

d-

100% ——— 300

55% ——— x

100x = 16.500

x = 165

e-

100% ——— 4500

9% ——— x

100x = 40.500

x = 405

f-

100% = 125

g-

100% ——— 200

1% ——— x

100x = 200

x = 2

h-

100% ——— 400

110% ——— x

100x = 44.000

x = 400

Answer 2

A) 1500 x 30 = 45000 / 100 = 450

B) 120 x 10 = 1200 / 100 = 12

C) 980 x 20 = 19600 / 100 = 196

D) 300 x 55 = 16500 / 100 = 165

E) 4500 x 9 = 40500 / 100 = 405

F) 125 x 100 = 12500 / 100 = 125

G) 200 x 1 = 200 / 100 = 2

H) 110 x 400 = 44000 + 10% = 440