Quantitative Aptitude - Arithmetic Ability Questions

The ratio of number of boys to the number of girls in a school of 432 pupils is 5 : 4. When some new boys and girls are admitted, the number of boys increase by 12 and the ratio of the boys to girls changes to 7 : 6. The number of new girls admitted is

When 0.090909.....is converted into a fraction, then the result is

What is the value of 36+729381+643

What is the y – intercept of the linear equation 59x + 14y – 112 = 0?

If P = 7 + 4√3 and PQ = 1, then what is the value of (1/P2) + (1/Q2)?

If 1 + secA = x, then the value of x is

If x = 313- 3-13, then 3x3 + 9x value is

If 2x + 6y = 3xy and 10x -­ 3y = 4xy, find x, y.