JAMB - Mathematics (2007 - No. 5)

The pie chart above illustrate the amount of private time a student spends in a week studying various subjects. Find the value of k

90^o

60^o

30^o

40^o

K + 2K + 3K + 75 + 105 = 360 (at a point)
6K + 180 = 360
6K = 360 - 180
6K = 180
k = 180/6 = 30º