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A shopkeeper sells OPPO and VIVO mobile phones for Rs. 10,000 and Rs. 20,500 respectively. Ram bought both the phone but when he gave cash to the shopkeeper he gave him Rs. 2,000 fake currency notes on OPPO mobile and Rs. 500 fake currency note on VIVO phone and Ram sold OPPO mobile phone at 10% more than the original selling of OPPO phone and he sold VIVO mobile phone at …(A)... more than the original selling price of the VIVO phone. If the total profit percent of Ram is 20% then find the value of ‘A’.

A shopkeeper sells OPPO and VIVO mobile phones for Rs. 10,000 and Rs. 20,500 respectively. Ram bought both the phone but when he gave cash to the shopkeeper he gave him Rs. 2,000 fake currency notes on OPPO mobile and Rs. 500 fake currency note on VIVO phone and Ram sold OPPO mobile phone at 10% more than the original selling of OPPO phone and he sold VIVO mobile phone at …(A)... more than the original selling price of the VIVO phone. If the total profit percent of Ram is 20% then find the value of ‘A’. Correct Answer 10.24%

Given:

The original selling price of OPPO Mobile = Rs. 10,000

The original selling price of VIVO Mobile = Rs. 20,500

Fake currency gave by Ram to Shopkeeper on OPPO Mobile = Rs. 2,000

Fake currency gave by Ram to Shopkeeper on VIVO Mobile = Rs. 500

Ram sold OPPO mobile = 10% more than the original selling of OPPO Mobile

Total profit of Ram = 20%

Formula used:

Profit = S.P – C.P

S.P = Selling price, C.P = Cost price

Profit% = (Profit / C.P) × 100

S.P = C.P × (1 + Profit% / 100)

Calculations:

For Ram,

Cost price of OPPO Mobile phone = 10,000 – 2,000 = Rs. 8,000

Cost price of VIVO Mobile phone = 20,500 – 500 = Rs. 20,000

⇒ Total cost price of both the phones for Ram = 8,000 + 20,000 = Rs. 28,000

Total S.P = C.P × (1 + Profit% / 100)

⇒ 28,000 × (1 + 20 / 100)

⇒ 28,000 × (120 / 100)

⇒ Rs. 33,600

S.P of OPPO mobile by Ram = 10000 × (110 / 100) = Rs. 11,000

⇒ S.P of VIVO mobile phone by Ram = 33,600 – 11,000 = Rs. 22,600

Original selling price of VIVO Mobile = Rs. 20,500

Extra amount on Vivo mobile = 22,600 – 20,500 = Rs. 2,100

∴ Required percent = (2100 / 20,500) × 100 = 10.24%

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