ibm - a retailer shop priced all white paper pack as rs 30 and brown paper pack as rs 20 if the shop had sold twice as many white paper pack as brown paper pack and the total receipts of sales were rs 8240 then how many of each were sold - skillgun

Assume Number of Brown paper sold is x
Number of white paper pack sold is 2x.
Total sales amount = Rs.8240
Price of white paper pack = Rs.30
Price of brown paper pack = Rs.20
i.e., Rs. (30 * 2x + 20 * x) = Rs.8240
60x + 20x = 8240
8x = 824
x= 103 and 2x = 206.