solution with explanation please

Deming & Sons manufactures four grades of lubricant, W-10, W-20, W-30, and W-40, from a joint process. Additional information follows. If Processed Further Product W-10 W-20 W-30 W-40 Units Produced 42,000 30,000 24,000 24,000 120,000 Sales Value at Split-Off $252,000 216,000 144,000 108,000 $720,000 Additional Costs $ 26,900 21,600 14,400 9,000 $ 71,900 Sales Values $ 274,000 252,000 180,000 120,000 $ 826,000 Required: Assuming that total joint costs of $288,000 were allocated using the physical quantities method, what joint costs were allocated to each product? (Do not round intermediate calculations.) Product Joint Costs Allocated W-10 W-20 W-30 W-40