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2x +3y =7 … (1) And 2x+2 -3y+2 =7 4 ×2x – 3 ×3y =7 … (2) Let, 2x =a and 3y = b Then (1) and (2) …. a + b =7 4a – 3b =7 On solving equations- a =4, b =3 now – 2x =4 =22 x =2 And 3y =3 =31 y =1. (2,1)
A shopkeeper offers a 10% discount on an article and still manages to earn a 12% profit. If the marked price of the article is Rs. 2800, calculate the c...
Profit percentage received on a product when sold for Rs.400 is equal to the percentage loss incurred when the same product is sold for Rs.320. Find the...
Hari purchased 9 bags, 12 shoes, and 15 hats for Rs. 270, Rs. 720, and Rs. 450, respectively, from a seller. By selling each bag and each shoe, the sell...
A shirt is marked 30% above the cost price and sold after a discount of Rs.200 at Rs.398. Find the cost price of the shirt.
A manufacturer sells an article to a wholesaler at a profit of 20%. The wholesaler sells it to a retailer at a profit of 25%, and the retailer sells it ...
The selling price of a mobile phone is Rs. 735. If the mobile phone was sold at 25% profit, then find the discount offered given that the mobile phone w...
A vendor first increased the price of a book by 18% and then by 25%. If he sells it after allowing a discount of 20%, then he will earn a profit of Rs. ...
A, B and C started a business. Twice the investment of A is equal to thrice the investment of B and also five times the investment of C. If the total pr...
A person bought an article and sold it at a loss of 20%. If he had bought it at 10% loss and sold it for 74 more, he would have gained 30%. Find the pro...
