Quantitative Aptitude - Arithmetic Ability Questions

P + Q = 2(P-Q). If Q = 10, what is the value of P?

D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 2:3, what is the ratio of area of ΔADE and area of quadrilateral BDEC?

R is 80% more efficient than S. If S alone can make a book in 90 days, then R alone can make the book in how many days?

The sum of the lengths of the edges of a cube is equal to four times the perimeter of a square. If a quarter of the numerical value of the volume of the cube is equal to the numerical value of the area of the square, then the length of one side of the square is

ΔABC is similar to ΔDEF. If the ratio of similar sides is K:1, the ratio of their areas is

Solve : (x + 2y) (2x - y)

Which of the following fractions is largest?

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.