1. A Laptop in Courts has a marked price of $60,000. If paid in cash you are to pay 20% less than the marked price. It also has a hire purchase plan which states to pay 30% of the marked price and $1000 monthly payments for 4 yrs. Calculate:
Discount on Cash price.
Cash Price.
Amount Payable.
Hire Purchase Price
Difference between the Hire Purchase price and the Cash Price.

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

This is about circle theorems. someone asap : (