Question
A shopkeeper mixes two types of rice, costing $30 per kg
and $50 per kg, in the ratio 3:2. He sells the mixture at $45 per kg. What is his percentage profit or loss?Solution
Cost price of mixture per kg = (3 × 30 + 2 × 50) / (3 + 2) Cost price per kg = (90 + 100) / 5 = $38 Selling price = $45 per kg Profit = 45 - 38 = $7 Profit percentage = (7 / 38) × 100 ≈ 18.42%.
A cone has a base radius of 6 cm and a height of 8 cm. Find its volume and slant height (use π = 3.14).
120Â Â 124Â Â 151Â Â 167Â Â Â 292Â Â Â ?
Factor the polynomial: x³ - 6x² + 11x - 6.
What is the function of the "IF" function in Excel?
The simplified value of (452 x 452 x 452 – 356 x 356 x 356)/(452 x 356 + 452 x 452 + 356 x 356) is:
A bag contains 8 black and 10 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
In the figure, ABCD is a cyclic quadrilateral with O as center of the circle If ∠BOC = 136°, find ∠OBC.