Problem $6-29$ Mutually exclusive investments and project lives

Econo$-$Cool alr condtioners cost $$350$ to purchase, result in electricity bills of $$200$ per year, and last for five years. Luxury Air models cost $$550,$ result in electricity bils of $$150$ per yeas, and last for eight years. The discount rate is $27$ k $.$

a$.$ What is the equivalent annual cost of the Econo$-$Cool model?

b$.$ What is the equivalent annual cost of the Luxury Air model?

c$.$ Which model is more cost$-$effective?

d$.$ If the inflation rate is expected to be $10\%$ per year for the foresecable future What is the equivalent annual cost of the Econo$-$Cool model and Luxury Air model?

Note: Do not round intermediate calculations. Round your answers to $2$ decimal places.

$\backslash$table$[[$a$.$ ENG$[$Econo$-$Cool Investment and Electricity$],],[$b$.$ EACRumury Ar Investment and Electricily$),],[$c$.$ Cost eflective model,Lumuy Air model$],[$d$.$ EAC$($Econo$-$Cool Investrent and Clectrioity$),],[$d$.$ EMC$($Lumy Ar Investment and Clectricity$),]]$