Resposta :
Resposta:
A- 20 litros = 50
40 -----> 100% 20×100=40x
20 -----> x 2000=40x x=2000/40 x=50
B- 10 litros = 25%
40 -----> 100%
10 ------> x 10×100=40x
1000=40x x=1000/40 x=25
Resposta:
A- 20 litros = 50
40 -----> 100% 20×100=40x
20 -----> x 2000=40x x=2000/40 x=50
B- 10 litros = 25%
40 -----> 100%
10 ------> x 10×100=40x
1000=40x x=1000/40 x=25