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Let the number of males and number of females in 2018 be '60a' and '70a', respectively. So, number of males in 2019 = '60a' X 0.9 = '54a' Or, number of females in 2019 = '70a' X 1.2 = '84a' ATQ, (84a - 60a) = 48 Or, 24a = 48 So, 'a' = 2 Therefore, required number of people = (54a + 84a) = '138a' = 138 X 2 = 276
The Height of a metallic hollow cylinder is 28 cm and the difference between its inner curved surface Area and outer curved Surface area is 66cm². If t...
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PQRS is a cyclic trapezium where PQ is parallel to RS and PQ is the diameter. If ∠QPR = 40° then the ∠PSR is equal to:
In a rectangular floor of length and breadth of 21 metres and 6 metres, respectively, square tiles each of 2 metre edge length are to be laid. If the co...
Perimeter of a square shaped plot is 96 metres and the area of a rectangular plot is 65% more than that of the square shaped plot. Find the area (in m
The radius of the two cylinders is in the ratio of 1: 4 and their heights are in the ratio of 4: 3. Their volumes will be in the ratio.
The area of a rectangular field is 24% of the area of a square field with a perimeter of 80 meters. If the rectangular field has a perimeter of 40 meter...
In a rectangular floor of length and breadth of 20 metres and 8 metres, respectively, square tiles each of 4 metre edge length are to be laid. If the co...
If tan A = √5 – 2, then the value of tan A - cot A = ?
In measuring the sides of a rectangle, there is an excess of 14% on one side and 10% deficit on the other. Then the error percent in the area is
