vinay1983 wrote:I dont have its official answer

Half ticket price = H + R
Full ticket price = 2H + R
2H + R = 262_____________(1)
(H + R) + (2H + R) = 405
3H + 2R = 405_____________(2)
(1) * 3:
6H + 3R = 786___________(3)
(2) * 2:
6H + 4R = 810___________(4)
(4) - (3):
R = 24
Choose
D
Cheers