Question
Two cycles were sold at 1499 Rs each. First was sold at
25% profit and second at 20% loss. Find the overall profit or loss.Solution
Note-To make the SP same in both cases, then.                                             CP         SP 1st cases -25%=1/4          4×4         5×4 2nd cases-20%=-1/5         5×5         4×5                                                            41          40 Loss =41-40=1Rs Loss%= (1/41) ×100=2.43%.
The sum of the ages of a father and his son is 50 years. After 5 years, the father's age will be twice that of his son. What are their present ages?
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Let A be a 3 × 3 matrix such that |A ∣ =4. Then ∣ adj(adj(A)) ∣ equals:
155, 161, 173, 191, ?, 245
765 ÷ 25 × 100 ÷ 20 + 13 = x3 + 41, find 'x'
A container has 80 liters of a mixture of milk and water, with 60% milk. If 10 liters of water are added, what will be the new percentage of milk in th...
A rectangle has a length that is 4 cm more than its width. If the perimeter of the rectangle is 32 cm, find the dimensions of the rectangle.
If the mean of four observations is 20 and when a constant C is added to each observation the mean becomes 22 the value of C is –
The derivative of y = eË£ · cos(x) isÂ
Solve the inequality:
(3x – 4)/(x + 2) > 1