Quantitative Aptitude - Arithmetic Ability Questions

The solution set of 4x - 3y = 47 and 3x + y = 32 is

The marked price of a pen is Rs 3000. The shopkeeper gives two successive discounts of 15% and a% to the customer. If the customer pays Rs 2142 for the pen, then what is the value (in percentage) of a?

The HCF of two numbers is 12 and their LCM is 72. If one of the two numbers is 24, then the other number is

Product of three consecutive odd numbers is 1287. What is the largest of the three numbers?

The sum of a fraction and 3 times its reciprocal is 37/10. What is the fraction?

If a2+1a2 = 38, then find the value of a-1a?

What is the simplified value of 22433+393-11253?

Δ ABC is right angled at B. If m∠A = 60°, then what is the value of sec C.sin A?