Quantitative Aptitude - Arithmetic Ability Questions

The initial ratio of sugar to flour in a dough was 2 : 7. To 9 kg of the dough John added more sugar to make the sugar to flour ratio 2 : 5. How much sugar did John later add?

If x + [1/(x + 7)] = 0, then what is the value of x – [1/(x + 7)]?

What is the altitude of an equilateral triangle whose side is 12 cm?

The sum of all prime numbers between 58 and 62 is

Divide 3740 in three parts in such a way that half of the first part, one-third of the second part and one-sixth of the third part are equal.

In what ratio does the point T(x,0) divide the segment joining the points S(-4,-1) and U(1,4)?

If x = y + 2 then x3 - y3 - z3 is

What is the simplified value of (cosec A – sin A)(sec A – cos A)(tan A + cot A)?