I dont know what to do... im kinda not smart

7.

10% = 6

25% = 15

50% = 30

20% = 12

8.

a = 35

b = 105

c = 140

9.

15 is 30% of 50.

10.

The punch recipe contains 25% lemonade:

24/6 = x/100

x=1/4 x 100 = 25%

11.

520

multiply 650 by 80 amd then divide by 100

or simply multiply 650 by 0.8

to get 520 students.

12.

Number of items checked = 300

Defective items = 3%

Number of defective items =

Number of defective items =

Number of defective items = 9

Number of items worked = Total items - Number of defective items

Number of items worked = 300 - 9 = 291

291 items of checked items worked.

you answer is a

step-by-step explanation:

1. perpendicular

2. parallel

3. perpendicular