18). 16:80 is the ratio but in simplest form is; 5:0
19). 36:54 is the ratio but in simplest form is; 2:3
20). 12:24 is the ratio but in simplest form is; 1:2
hope that helps:D
For these problems you have to use PEMDAS so for problem 15 you would do the parentheses first, (21-3) you get 18 and then exponents, 3^2, you get 9, no multiplication but there is division so take your answers, 18 and 9 and divide them, you get 2, so the answer to 15 is 2.

=47.8888 when you round it up you can get get about 48 then you estimate to about 50.
Answer:
Vector is 32 years old.
Step-by-step explanation:
As it is given that Mags is 34 years old and he is 2 years older than Vector.
Since Mags is 2 years older than Vector, Vector's age is 2 year less than Mags.
therefore we subtract 2 years from the age of Mags.
= 34 - 2 = 32 years
So Vector is 32 years old.