$10-37.$ Janet Foster bought a computer and printer at Computerland. The printer had a $$600$ list price with a $$100$ trade discount and $2/10,$ n$/30$ terms. The computer had a $$1,600$ list price with a $25\%$ trade discount but no cash discount. On the computer, Computerland offered Janet the choice of $(1)$ paying $$50$ per month for $17$ months with the $18$th payment paying the remainder of the balance or $(2)$ paying $\%8$ interest for $18$ months ni equal payments. LU $10-1(2)$

a$.$ Assume Janet could borrow the money for the printer at $8\%$ ot take advantage of the cash discount. How much would Janet save? $($Assume $360$ days.$)$

b$.$ On the computer, what si the difference ni the final payment between choices $1$ and $?2$