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On a pie chart there s are six sectors of which... - JAMB Mathematics 2008 Question

On a pie chart there s=are six sectors of which four angles are 30o, 45o, 60o, 90o and the remaining two angles are in the ratio 2:1. Find the smallest angles of the remaining two angles
A
15o
B
30o
C
45o
D
60o
correct option: c
30 + 45 + 60 + 90 + 2x + x = 360o
225 + 3x = 360
3x = 360 - 225
3x = 135
x = 45o
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