Joint Products – profit earned from sales

appreciate & please help the calculation for profit earned as per below question :-
( I cannot get the answer for 1.5250 and 2.6750)

opening stock nil
costs of processing direct material $25,000 & direct labour $10,000
production overheads are absorbed at the rate of 300% of direct labour costs
production unit sales unit
output & sales consisted of

product J 8000 7000
product k 8000 6000
product x 1000 1000

The sales value per unit of J, K and X is $4, $6 and $0.50 respectively. The saleable value
of the by-product is deducted from process costs before apportioning costs to each
joint product. Costs of the common processing are apportioned between product J and K on the basis on sales value of production.

1. what was the profit earned from the sales of J ? answer 5250
2. what was the profit earned from the sales of K ? answer 6750

my calculation :
Product output S/P S.value cost cost unit
J 8000 $4 32,000 22,000 2.75
K 8000 $6 48,000 33,000 4.125
80,000 55,000
cost : 25,000+30,000-500 = 55,000
J K J
cost 22,000.00 33,000.00 sales 7000 X ( $4-$2.75=1.25) = 8750
sales 32,000.00 48,000.00
profit 10,000.00 15,000.00 K
sales 6000 x ($6 – $4.125= 1.875) = 11250