Quantitative Aptitude - Arithmetic Ability Questions

If the perimeter of a semi-circle is 36 cm, then find its radius (in cm).

D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 2:5 and area of ΔABC is 98 cm sq, what is the area (in sq cm) of quadrilateral BDEC?

Two students appeared for an examination. One of them secured 26 marks more than the other and his marks were 75% of the sum of their marks. The marks obtained by them are

A car can cover 350 km in 4 hrs. If its speed is decreased by 12.5 kmph. How much time does the car take to cover a distance of 450 kms.

The age of Dr. Pandey is four times the age of his son. After 10 years , the age of Dr. Pandey will be twice the age of his son . The present age of Dr. Pandey's son is

Which of the following value of 'x' satisfies the equation 814x+4 = 2432x+8?

If  a+1/a = 3, then a3+1a3?

What is the value of [tan (90 – A) + cot (90 – A)]2/[2 sec2(90 – 2A)]?