Marked price of an item is Rs. 300. On purchase of 2 items, discount is 24% and on purchase of 5 items, discount is 38%. Rachna buys 7 items, what is the effective discount?

Rachna gets a 24 percent discount on 2 items and a 38 percent discount on 5 items. The effective discount is the weighted average of the individual discounts, calculated as ((2 multiplied by 24) plus (5 multiplied by 38)) divided by (2 plus 5). This gives (48 plus 190) divided by 7, which equals 238 divided by 7, resulting in an effective discount of 34 percent.

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