Quantitative Aptitude - Arithmetic Ability Questions

ABCD is a quadrilateral with AB = 9 cm, BC = 40 cm, CD = 28 cm, DA = 15 cm and angle ABC is a right –angel
What is the area of quadrilateral ABCD?

In ∆ABC, ∡A + ∡B = 75 and ∡B + ∡C = 140, then ∡B =

The mean of 10 observations is 17. One more observation is included and the new mean becomes 16. The 11th observation is

In a mixture of milk and water, there is 19% milk. If the quantity of milk in the mixture is 437 mililitres, then what is the total quantity (in millilitres) of mixture?

Simple interest on a sum for 18 months at 14% per annum is Rs 1365.What is the value (in Rs) of sum?

A non-zero number is greater than 7 times its reciprocal by 9.3. What is the number?

In ΔPQR, S and T are points on side PQ and PR respectively. ST is parallel to QR. If S divides PQ in the ratio 4:1 and length of QR is 15 cm,what is the length of ST?

Coefficient of x2 in (x + 7)(5 - 3x)(3x - 6) is