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Rahul bought 35 watches for Rs. 4200. If he sold 25 watches at 30% profit and rest are sold at 20% profit, then find overall selling price of 35 watches.
1. Rs. 5240
2. Rs. 4340
3. Rs. 5340
4. Rs. 5440
5.

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Correct Answer - Option 3 : Rs. 5340

Given:

C.P of 35 watches = Rs. 4200

Profit on 25 watches = 30%

Profit on 10 watches = 20%

Formula used:

Profit % = (Profit)/(C.P) × 100

S.P = [(100 + P%) × C.P]/100

Calculation:

Cost price of 1 items = Rs. 4200/35 = Rs. 120

S.P of 25 items = (130/100) × 120 = Rs. 156

⇒ S.P of 25 items = 25 × 156 = Rs. 3900

S.P of 10 items = (120/100) × 120 = Rs. 144 

⇒ S.P of 10 items = 10 × 144 = Rs. 1440

Total S.P of 35 items = Rs. (2340 + 1440) = Rs. 5340  

∴ Total S.P of 35 watches is Rs. 5340.

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