RequirementPlease show the calculation work

1.The following data are obtained from the files of Jake Co.'s records.

Cash sales	$200,000
Credit sales	850,000
Accounts receivable, 1/1/15	184,000
Accounts receivable, 12/31/15	165,000
Allowance for Bad Debts, 1/1/15	13,000 credit
Bad debts written off during 2015	11,200

	Amount	Percentage Uncollectible
Current	$115,000	3%
30-60 days	30,000	12
60-90 days	15,000	30
> 90 days	5,000	50
	$165,000

Assume Jake uses the percentage-of-sales method and estimates that 1.5% of credit sales are uncollectible.

a. What is the balance in the Allowance for Bad Debts at Dec. 31, 2015?

b. What is the amount of bad debt expense for 2015?

2.

Greer Company adopted dollar value LIFO on December 31, 2011. The inventory value at that time was $120,000. For the next 4 years, calculate the cost of inventory using the dollar value LIFO method.(Answer the number of A,B,C,D)

Year Ended	Year End Inventory at Current Value	Price Index		Dollar Value LIFO
12/31/2011	$120,000	100		$120,000
12/31/2012	$132,300	105		A
12/31/2013	$127,440	108		B
12/31/2014	$135,300	110		C
12/31/2015	$142,240	112		D