Question

calcule 24% de 120 e 55% de 220 e 75% de 35 e 15% de 15

Answer 1

Vamos lá...

Regra de três multiplique cruzado.

a) 24% de 120

100%----------120

24%-----------x

100x = 24.120

100x = 2880

x = 2880/100

x = 28,8

b)55% de 220

100$------------220

55%------------x

100x = 55.220

100x = 12100

x = 12100/100

x = 121

c) 75% de 35

100%-----------35

75%-----------x

100x = 75.35

100x = 2625

x = 2625/100

x = 26,25

d) 15% de 15

100%-----------15

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

100x = 15.15

100x = 225

x = 225/100

x = 2,25

Espero ter ajudado.