What fraction is next in pattern 1/8, 1/4, 3/8, 1/2 ?

Read the following two statements. then use the law of syllogism to draw a conclusion. if the tv is too loud, then it will give me a headache. if i have a headache, then i will have to rest.

What is the solution to the equation below? 3/x-2+6=square root x-2 +8

The mean of 10 values is 19. if further 5 values areincluded the mean becomes 20. what is the meanthese five additional values? a) 10b) 15c) 11d) 22