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Let, the initial no. of male students be X . X × 130% + (13,200 – X ) × 120% = 16,440 ⇒ 1.30 X + 15,840 – 1.20 X = 16,440 ⇒ 0.10 X = 600 ⇒ X = 6,000 No. of female students = 13,200 – 6,000 = 7,200 Required difference = 7,200 – 6,000 = 1,200 Or Use Alligation Net increase in Population =`(16440-13200)/(13200)xx 100 = 3240/13200 xx 100 = 270/11%` Male Female 20% 30% Net Change% = 270/11% So New Values, Male Female 220 330 Net Change = 270
The slope of a line passing through points (-2, 3) and (4, -1) is:
If sin⁶ x + cos⁶ x = 7/8, find sin⁴ x + cos⁴ x:
A sphere is inscribed in a cylinder. The radius of the cylinder is 7 cm. What is the volume of the sphere?
The radius of a circle is 14 cm, and the angle subtended by a sector at the center of the circle is 120°. Find the area of the sector.
Pipe P can fill a tank by itself in 16 hours, while pipe R can empty the tank in 36 hours when it is full. Together, pipes P and ...
The marked price and the selling price of an item are in the ratio of 5:4. If the % discount offered is equal to the % profit ear...
The ratio of the length and area of a rectangle is 1:39. And the ratio of length and breadth 4:3. Find the perimeter of the rectangle.
Income of A is twice the income of B. B and A spend 55% and 65% respectively of their incomes. Find the savings of A, if B saves Rs. 18000 in a month.
If a point P(x, y) is equidistant from A(6, 2) and B(-2, 6), find the equation representing this condition.