X=10 Simplify both sides of the problem 240 x+24x Subtract 24 from both sides 24x-24x- 24x-24x Factor the L side 24x(-x+10)=0 Set Factors =0 24x(-x+10)=0 X=0 or x+10+0 X+0 or x+10-Answer The expected value of x, where x is a discrete arbitrary variable, is a weighted median of the feasible values that x can take, each quantity being weighted according to the probability of the occurrence of that event. The anticipated value of x is usually written as E(x) In concrete terms; the expectation is what you would predict the outcome of an experiment to be on average. The expected value of a constant is a constant, so for example, E (1) multiply the random variable