Quantitative Aptitude - Arithmetic Ability Questions

15 years ago Cynthia was thrice as old as Brittany. The sum of their present ages is 94 years. How old is Brittany now?

The simplest value of 38-212+20318-227+45 is

If a3- b3= 91 and a - b = 1, then what is the value of ab?

The cost price of an article is x. It is marked up by 150%. It is sold at Rs 600 after giving 40% discount. What is x (in Rs)?

The marked price of an article is Rs 960 and it is sold at a discount of Rs 192. What is the discount percentage?

If x2+ y2+ z2= xy + yz + zx, then what is the value of (7x + 3y – 5z)/5x?

Triangle ABC is similar to triangle PQR and AB : PQ = 2 : 3. AD is the median to the side BC in triangle ABC and PS is the median to the side QR in triangle PQR. What is the value of (BD/QS)2?

The area of a square is 72.25 cm². Find its perimeter (in cm).