Question
The mean purchase price of items 'X' and 'Y' is Rs. 600.
Article 'X' is sold with a 20% profit, while article 'Y' is sold with a 30% profit. Calculate the total selling price of both items when the cost price of item 'X' exceeds that of item 'Y' by Rs. 300.Solution
ATQ, Cost price of article ‘X’ = (2 × 600 + 300)/2 = Rs. 750 Cost price of article ‘Y’ = 1200 – 750 = Rs. 450 Desired selling price = [(1.20 × 750) + (1.30 × 450)] = Rs.1485
If (a + b + c) = 18 and (ab + bc + ca) = 100, then find the value of (a² + b² + c²).
11, 18, 27, 38, 54, 66
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6x + 8y - [(12x + 6y) - (4x + 3y) + 2y] - 4xIf x = 15
find x 5 - 16 x 4 + 16 x 3 - 16 x 2 + 16 x  - 16 = ?
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The...
If x = 21, then the value of x5 - 22x4 + 22x3 - 22x2 + 22x - 1 is
