Perry surveyed 60 students at her school and found that 0.45 of the students she surveyed said their favorite class is math. Ano
ther 35% of the students she surveyed reported that their favorite class is science. How many more students in the survey prefer math over science?
1 answer:
0.45 x 60 = 27
35% x 60 = 21
27-21 = 6 more students prefer math
However, a further 12 students didn't specify whether they prefer maths or science, so you could argue that the answer is 6 +/- 12
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So the value of x is 7
