A retailer buys a washing machine marked at Rs 4800 and gets two successive discounts of 15% and 5%. If he spends Rs 124 on transportation and sells the washing machine at a gain of 13%, then find the selling price of the machine.

एक व्यापारी 4800 रुपये के अंकित मूल्य की वाशिंग मशीन 15% और 5% की दो क्रमिक छूट पर खरीदता है । यदि वह परिवहन पर रु 124 खर्च करता है और वाशिंग मशीन को 13% के लाभ पर बेचता है, तो मशीन का विक्रय मूल्य ज्ञात कीजिए।

A)

3520

B)

4520

C)

5520

D)

2520

Correct Answer :

4520

Explanation :

Selling Price = 15% and 5% of 4800
=(1 -15/100)*(1 - 5/100) *4800
=85/100 * 95/100 *4800
=3876

Actual cost price of retailer = Cost price + spend on transportation
=3876 + 124
=Rs. 4000

Selling Price of retailer= Actual cost price + Actual cost price × profit
=4000 + 4000 × 13%
=4000 + 520
=4520

Hence the selling price of the washing machine is Rs 4520

Let the original selling price of mobile is x.
As is given,
x - (25/100) * x = 4875
x - x/4 = 4875
3x/4 = 4875
x = 4875*4 /3 = 6500
Hence, original selling price of mobile is 6500.

Let MP of Pepsi be P and Coke be C.
P after two successive discounts = 90/100 * 75/100 * P
C after two successive discounts = 85/100 * 80/100 * C
therefore ratio or price , 90/100 * 75/100 * P = 85/100 * 80/100 * C
P/C = 85 * 80 / 90 * 75 => 17 * 8 / 9 * 15
P/C =136/135

Let original price = Rs. 100
Price after 1 st discount = Rs. 90
Price after 2 nd discount = Rs. (80/100) x 90 = Rs. 72
Price after 3 rd discount = Rs. (60/100) x 72 = Rs. 43.20