Question

URGENTEEE...

Calcule:
1) 15% de 300



2) 40% de 1000



3) 18% de 500



4) 25% de 280



5) 36% de 1500

Answer 1

Resposta:

Segundo regra de 3

1) 100%---- 300

15% ------- x

Multiplica cruzado

100x=4500

x=4500÷ 100 pode cortar os zeros ou dividir

x= 45

2)100%---- 1000

40%----- ×

100x= 40.000

x=40.000÷100

x= 400

3) 100%----- 500

18%------ x

100x=9000

x=9000÷100

x= 90

4) 100%------ 280

25%------- x

100x= 7000

x=7000÷100

x=70

5) 100%-----1500

36%------- x

100x=54.000 Corta os zeros

1x=540

x=540

1-45

2-400

3-90

4-70

5- 540