Solution:Solution (96-100):Number of government schools in city P
= (75°/360°) × 1800 = 375
Number of government schools in city Q
= (60°/360°) × 1800 = 300
Number of government schools in city R
= (105°/360°) × 1800 = 525
Number of government schools in city S
= (45°/360°) × 1800 = 225
Number of government schools in city T
= (33°/360°) × 1800 = 165
Number of government schools in city U
= (42°/360°) × 1800 = 210
Number of government schools in city Q = 300
Number of government schools in city R and S together = 525 + 225 = 750
Therefore, ratio = 300 : 750 = 2 : 5