Question
A shopkeeper bought an article for Rs. 180. He sold it
at profit 30% after allowing a discount of 40%. If instead he had sold it at 20% discount, then find the new selling price of the article.Solution
Selling price of the article = 180 × 1.3 = Rs. 234 Marked price of the article = 234 ÷ 0.6 = Rs. 390 New selling price of the article = 390 × 0.8 = Rs. 312
Find both the maximum value and the minimum value respectively of 3a4 minus; 8a3 + 12a2 minus; 48a + 25 on the interval...
If the sum of the coefficients in the expansion of (a + b)n is 16384, then the greatest coefficient in the expansion is
If the sum of the coefficients of all even powers of x in the product (1 + x + x2 + … + x2n) (1 – x + x2 – x...
A certain number of books were distributed equally among a group of students in a class. Each student received a number of books equal to one-fifth of t...
Find the coefficient of x⁴ in (2x – 3/x)⁶.
The perimeter of a rectangular field is 34 metres and its area is 60 m2 . What is the length of the diagonal of this field?
Relevant for Exams:
