Adjustment entry on freight

Received GST invoice from Transporter
pass entry

Fright Charges A/c Dr
CGST A/c Dr
SGST A/c Dr
To Transporter A/c Cr
( Fright Charges payable )

payment entry

Transporter A/c. Dr
To Bank A/c Cr
( Payment to Transporter )

Hi Friends,

I need your answers with explanation for below questions ;

Q1;
ABC LTD has recently sold two hydraulic components to long-known local customer. The hydraulic components were sold for an amount of INR 1.200.000. Contribution margin on sale were 40%. Unfortunately, the included metal hoses were filled with rust, and the customer therefore could not accept the components. It was agreed to credit the sale. Please book the credit invoice.

Q2;
ABC LTD ordered goods that amounts to INR 50.000.000 from our owner, ABC LTD A/S in Germany. ABC LTD A/S has made three shipments each covering one third of the total amount. Only two of three shipments have been received. The third shipment is currently at sea. Expected arrival is May 5, 2022. The purchase will be paid upon receipt of all goods. Please explain how to present in the monthly report of April 2022.

Q3;
ABC LTD has an old overdue receivable of INR 1.000.000 from a customer, for which a provision for bad debts of INR 1.000.000 have been made some months ago. The customer has now been declared bankrupt, and half a year later ABC LTD receives INR 400.000 from the estate. Please explain how to present this in the monthly report.

Q4;
Every month inventory must be calculated and presented in the monthly report. Please explain all relevant steps in calculating the correct inventory value to be presented in the monthly report.

Kindly help me Friends.

Thanks in advance