passpadi

2009

Mathematics

JAMB

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

Correct Answer: 120

Explanation

20 + 2x + 60 + 40 + x + 50 = 260 170 + 3x = 260 3x = 260 - 170 3x = 90 x = 90/3 = 30 At least 4 days 4 days = 40 5 days = 30 6 days = 50 Total = 120

20 + 2x + 60 + 40 + x + 50 = 260 170 + 3x = 260 3x = 260 - 170 3x = 90 x = 90/3 = 30 At least 4 days 4 days = 40 5 days = 30 6 days = 50 Total = 120
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