Question on: JAMB Mathematics - 2009
(\begin{array}{c|c} No. of days & 1 & 2 & 3 & 4 & 5 & 6\ \hline No. of students & 20 & 2x & 60 & 40 & x & 50 \end{array})
The distribution above shows the number of days a group of 260 students were absent from school in a particular term. How many students were absent for at least four days in the term
A
180
B
120
C
110
D
40
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Correct Option: A
3x + 170 = 260
3x = 260 - 170
3x = 90 (\to) x = 30
therefore, 20 + 2x + 60 + 40
= 180
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