Quantitative Aptitude - Arithmetic Ability Questions

In a camp 180 students had ration for 20 days. How many students should leave the camp if the ration should last for 25 days?

If sinC + sinD =X, then the value of X is?

ΔABC is right angled at B. If m∠A = 45 deg, then find the value of (tanC + √3/2).

If 4x -7 < x - 2 and 5x +2/3 ≥ 3x + 1; then x can take which of the following values?

If a retailer offers a discount of 28% on the marked price of his goods and thus ends up selling at cost price, what was the % mark up?

What should be added to 8(3x - ­4y) to obtain 18x ­- 18y?

The mode of the data 12, 1, 10, 1, 9, 3, 4, 9, 7, 9 is

If the average age of four children is 12 years and the average age of these children and their fathers is 20 years, what is the age of the father?