Hello, Myllhya. Whenever using unit rate, you set up a proportion: . Imagine the line in between x and y is the word 'per'. Finding how many feet in a given number of inches is the same as saying 'how many feet per inch', so this will be written as
because feet becomes dependent on inches. Or, vice versa, the problem asks for inches for a certain amount of feet, you apply the same concept. The number of inches depends on feet, so you proportion is
.
I hope this was helpful. : )
Solution:
We are given below frequency table:
Amusement-Park Museum Broadway-Show Total
Juniors 57 21 42 120
Seniors 64 44 58 166
Total 121 65 100 286
We have to find the percentage of surveyed students who chose the amusement park.
From the table, we see there are total 121 students who chose amusement park out of total 286 students.
Therefore, the percentage of surveyed students who chose the amusement park is given below:
Hence, the option A. 42.30% correct.