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If one kilo of Persian rice costs $5, how much would Josephine pay for 12 kilos after applying the 20% discount offered on every 4 kilos?

$48

To determine how much Josephine would pay for 12 kilos of Persian rice after applying the 20% discount, we should first calculate the total cost without the discount.

The cost of one kilo of Persian rice is $5. Therefore, the cost for 12 kilos is:

12 kilos × $5/kilo = $60.

Next, we need to identify how many discounts Josephine can apply. The discount is offered for every 4 kilos of rice purchased, which means we can identify how many sets of 4 kilos are included in 12 kilos:

12 kilos ÷ 4 kilos/discount = 3 discounts.

Each discount applies to 4 kilos, and the original price for 4 kilos is:

4 kilos × $5/kilo = $20.

With a 20% discount on $20, we calculate the discount amount:

20% of $20 = 0.2 × $20 = $4.

This means the cost after the discount for those 4 kilos is:

$20 - $4 = $16.

Since there are 3 sets of 4 kilos in 12 kilos, we calculate the total cost after applying the discount to all three sets:

3 sets × $16/set = $48

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