Question
A retailer purchased 50 kg of a vegetable from a
wholesale market. He sold half of it at a profit of ₹450, and the rest at a loss of ₹275. What was the difference (increase ₹) between the two selling prices per kg of the vegetable?Solution
Let CP of 1 kg vegetable be Rs. x Total CP = 50x Now, SP of 1st half = 25x + 450 SP of 2nd half = 25x - 275 Difference in SP = (25x + 450)/25 - (25x - 275)/25 ⇒ (25x + 450 - 25x + 275)/25 ⇒ 725/25 ⇒ 29
Simplify:
6x + 8y - [(12x + 6y) - (4x + 3y) + 2y] - 4xIf 9x2 + 16y2 = 24xy, then find the ratio of ‘x’ and ‘y’, respectively.
- Suppose [a + (1/16a)] = 3, then the value of [16a³ + (1/256a³)] is:
If, 6x + y = 20, and 2xy = 32, and 6x > y, then find the value of 216x³ – y³.
If x + 1/x = 2, find x⁷ + 1/x⁷.
(x – 6) 2 + (y + 2) 2 + (z – 4) 2 = 0, then find the value of 4x - 3y + z.
Three cubes of metal whose edges are 3cm, 4cm and 5cm. respectively are melted and a single cube is formed. What is the length of the edge of the newly ...
A number is increased by 20%, and the resulting number is decreased by 20%. If the initial number is ₹x, the final number is ₹2880. What is the valu...