Answer:
Step-by-step explanation:
By using the process of elimination you can immediately disclose C and D as being incorrect.
35+85=120
180-85= 95
95=35+x
95-35=60
60-10=50
I think that is the right answer, but I am may be wrong. I hope it helps! : )
6x-12
Combine 2x and 4x = 6x
Combine -17 and 5 = -12
Let bob score =x
according to given condition
(3x-40)/2=100
3x-40=200
3x=240
x=80
so bob score =80