Can someone please help me out marking brainliest for a good explanation (picture)

9. a) 18 b) 4

10. a) 67.5g b) $75

Step-by-step explanation:

9. a) 3*n=(9*6), n=18

b) cross multiply and you will get 15n=60, n=4

10 a) 15% of 450=(15*450)/100=67.5

b) 125% of $60=(125*60)/100=75

Step-by-step explanation:

9 a = soln

3:9 = 6:n

or, 3/9 = 6/n

or, 3n = 54

or, n = 54/3

so, n = 18

b = soln

n/10 = 6/15

or, 15n = 60

or, n = 60/15

so, n= 4

10) a = 15% of 450

= 15/100 * 450

= 15/10 * 45

or, 15/2 * 9

or,  135/2

= 67.5 g

b= 125% of 60

= 125/100 * 60

= 5/4 * 60

= 5*15

= $75

d is the correct answer

step-by-step explanation:

x= 8 because 3x = 3 * 8, and 3*8 = 24

your answer would be 12