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Start learning 50% faster. Sign in nowLet the cost price of articles ‘A’ and ‘B’ be Rs. 4y and Rs. y respectively Sum of cost price of articles ‘A’ and ‘B’ = 1500 × 2 = 3000 => 4y + y = 3000 => 5y = 3000 => y = (3000/5) = 600 So, cost price of article ‘A’ = 4y = Rs. 2400 Cost price of article ‘B’ = y = Rs. 600 Selling price of article ‘A’ = 2400 × (126/100) = Rs. 3024 Selling price of article ‘B’ = 600 + 100 = Rs. 700 So, average selling price of given two articles = (3024 + 700) ÷ 2 = (3724/2) = Rs. 1862
The angle of elevation of a tower from a certain point of bus stand is 30°. When a man walks 5m ahead in the direction of the tower, the angle of el...