Me. ive tried all of them, none of them give me the right answer when i do it.

what is the solution to this equation?
16x-10x+9 = 99-30

a) x=11
b) x=12
c) x=10
d) x=13

Ken leaves work 20 minutes late. he decides to make up time by taking the toll road instead of side streets. he can travel three times faster by taking the toll road. create an equation to represent his total travel time, including wait time, where x is the number of minutes the drive was expected to take