Answer:
Step-by-step explanation:
In ratios, when a quantity raised by an amount, the other do, respectively.
We have a ratio of 10:30
First one : x:18 => (5/3)x : 30 = 10:30
=> 5/3x = 10 => x = 10 : 5/3 = 6
Second one : 8:x = 10:30
5/4x8 : (5/4)x = 10:30
10 : (5/4)x = 10:30
(5/4)x = 30
x = 30 : 5/4 = 24
Last one : 12:x = 10:30
12 x 5/6 : (5/6)x = 10:30
10 : (5/6)x = 10:30
5/6x = 30
x = 30 : 5/6 = 36
