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Start learning 50% faster. Sign in nowLet the cost price of article ‘A’ = Rs. ‘100y’ Then, selling price of the article when it is sold at a profit of 60% = 1.60 × 100y = Rs. ‘160y’ And, selling price of the article when it is sold at a loss of 16% = 0.84 × 100y = Rs. ‘84y’ According to the question, 160y – 84y = 190 Or, y = (190/76) Or, y = 2.5 So, cost price of article ‘A’ = 100 × 2.5 = Rs. 250 Therefore, cost price of article ‘B’ = 250 + 80 = Rs. 330
The average age of 16 girls is 35 years. If the age of two more girls is added the average decreases by 3.5 years. What is the sum of the age of new girls?
The average of 25 numbers is 22.The average of first 12 numbers is 14 and that of the last 12 numbers is 17. What will be the 25th number?