Question

i really don't understand this part and the page is dew in like 4 hours. please someone help me with these two questions. id really appreciate it.​

Answer 1

Explanation:

Find the ratio.

x / y --) 8/20 = 2/5

Find y.

2/5 x ?/? = 42/y ; 42/2 = 21

2/5 x 21/21 = 42/105

42/105 = x/y ---) x = 42 and y = 105

Find the ratio.

x / y --) 12/8 = 3/2

Find y.

3/2 x ?/? = x/12 ; 12/2 = 6

3/2 x 6/6 = 18/12

18/12 = x/y --) x = 18 and y = 12