Quantitative Aptitude - Arithmetic Ability Questions

In what ratio should Darjeeling Tea costing Rs. 400 per kg be mixed with Assam Tea costing Rs. 300 per kg. So that by selling the mixture at Rs. 408 per kg, there is a gain of 20%?

In a class consisting of boys and girls, there are 45 students. If three fifth of the students are boys, find the number of boys in the class.

The LCM of 14, 21 and 35 is

Two numbers are in the ratio 4:5 and their HCF is 13. Their LCM is

ΔPQR is right angled at Q. If m∠R = 45°, then find the value of (tanP - 1/2).

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

ABC is an equilateral triangle of side 6 cm. If a circle of radius 1 cm is moving inside and along the sides of the triangle, then the locus of the centre of the circle is an equilateral triangle of side is

In a cyclic quadrilateral ABCD , the side AB is extended to a point X. If ∠XBC = 82° and ∠ADB = 47° , then the value of ∠BDC is