telecom store inventory program using java code

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tore charges Rs150 per sim ,Rs 3500 for a handset, Rs 100 for a mobile pouch and Rs 750 for a headphone.

7.5 % VAT is applicable to all products.Also if a customer buy all the four products together,then 5% discount will be given by the store.

1.If a customer by all four products from the store, then calculate the total amount of money he need to pay?