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(a) What is basic salary and which are elements of salary calculation formula? {12 Marks) (b) Tristan is compensated with an annual salary of $55,000 paid biweekly. His regular workweek consists of four 10-hour days, and he is eligible for overtime at 1.5 times pay for any work in excess of his regular requirements. Tristan worked regular hours for the first two weeks. Over the next two weeks, Tristan worked his regular hours and became eligible for 11 hours of overtime. During these two weeks, he worked his regular shift on Good Friday but his employer has agreed to give him another day off with pay in the future. a. Determine Tristan's gross I earnings for the rst two-week pay period. b. Determine Tristan's gross earnings for the second twoweek pay period. (c) A cellular retail store purchases an iPhone with an MSRP of $779 less a trade discount of 35% and volume discount of 8%. The store sells the phone at the MSRP. a. What is the mark-up amount? 1). If the store knows that its expenses are 20% of the cost, what is the store's prot