Find x.

X=1

im sorry.. im not entirely sure but i just cross-multiplied so x/45 = 2/90 and so yeah I got 1

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.