Quantitative Aptitude - Arithmetic Ability Questions

If 16% of an electricity bill is deducted, Rs 1806 is still to be paid. How much was the bill?

The amount (in Rs) received at 10% per annum compound interest after 3 yrs is Rs 1,19,790. What was the principal?

The points A(x,2), B(­2,1) and C(6,­3) are collinear. Find x?

A boat cover row 12 km upstream in 4 hours and can cover the same distance downstream in 3 hours. What is the speed (in km/hr) of the boat in still water?

If √(1 - cos2A) = x, then the value of x is

There is 40% increase in an amount in 10 years at simple interest. What will be the compound interest of Rs 25000 after 2 years at the same rate?

A train leaves Kazipet at 5 a.m. and reaches Bangalore at 3 p.m. Another train leaves Bangalore at 7 a.m. and reaches Kazipet at 5 p.m. When do the two trains meet? Assume that the trains travels at equal uniform speeds.

Of the 3 numbers whose average is 40, the first is 1/3 rd the sum of other 2. What is the first number?