Quantitative Aptitude - Arithmetic Ability Questions

A student multiplied a number by 6/7 instead of 7/6. What is the percentage error in the calculation?

What is the value of tan 7π/6?

If x + √5 = 5 + √y, and x, y are positive integers, then the value of x+yx + y

In the given figure, PQR is an equilateral triangle with side as 12 cm. S and T are the mid points of the sides PQ and PR respectively. What is the area (in sq.cm) of the shaded region?

The price of an article is decreased by 10%. To restore it to its former value, the new price must be increased by

If Sec θ = 25/24 , then what is the value of Sin θ?

Marked price of an article is Rs 3600 and selling price is Rs 3132. What is the discount percentage?

A, B and C enter into a partnership, investing Rs. 6000. A invests Rs. 1000 and B and C invests in the ratio of 2:3. Find the profit of C, when the annual profit is Rs. 2400