Respuesta :

Answer:

1: 24 girls

2: 640

3: 300

4: 3/10

5: 42

Step-by-step explanation:

1: 2/5 × 40

80÷ 5

16

girls = 40- 16

= 24

2: 1/3 × 960

960 ÷3

= 320

Left = 960 - 320

= 640

3: 3/8 × 480

1440 ÷ 8

= 180.

Left = 480 - 180

= 300

4: 2/5 × 3/4

= 6/20

= 3/10

5: 2/5 × x = 18

2x = 28 × 5

2x = 140

x = 70

70 - 28

= 42

Step-by-step explanation:

1. 24 girls

2.600

3.300

yan lang alam ko insan