Question

In all the three sections of Woodland High
School, there are 50, 70 and 80 students. Those
who secured F grade are 10%, 20%, and 30%,
respectively. What percentage of the total students in the school secured F grade?


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Answer 1

Answer:

The area of a circular ring is 942.6 sq cm and the radius of the larger circle is 20 cm.

(a) the area of the smaller circle, and

(b) the uniform width of the ring. (Use a = 3.142)

Answer 2

Answer:

50% students scored F grade.

Step-by-step explanation:

10%+20%+30%

=50%

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