Answer:
d
Step-by-step explanation:
because in 2 they make 600 and 600 times 3 is 1,800 then do 2 times 3 witch is 6 so 6 hours after 10:30 is 3:30. I hope that makes sense <3
12x+5x-8x=9x
12x+5x=17x
17x-8x=9x