Students were surveyed about their favorite colors. - of the students preferred red, of the students preferred
blue, and of the remaining students preferred green. if 15 students preferred green, now
red green. if 15 students preferred green, how many students wer
surveyed?

answer: all we have to find the fraction of students who preferred green and go from there.

subtracting blue and red out of the all students,

1- (1/8+1/4)

1- 3/8

5/8 is the remaining students, in order to find 3/5 of the remaining students, we multiply by 3/5

5/8(2/5) = 3/8

3/8 preferred green, which was 15 students. in order to get 100% of the whole   population (1), we multiply by 8/3:

15(8/3) = 40

40 students were surveyed in total.

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step-by-step explanation:

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.

answer: 193

explanation:

200-7 = 193