Quantitative Aptitude - Arithmetic Ability Questions

Gautam goes to office at a speed of 12 kmph and returns home at 10 kmph.His average speed is

If A = 11x2+11x4+12x3+14x7+13x4+17x10... upto 20 terms, then what is the value of A?

Rajesh buys a table of Rs 900 and sells it. Rajesh gives two successive discount of 10% and 20% to the customer. What will be the selling price (in Rs) of the table?

For the inequation x^2–7x + 12 > 0, which one of the following is correct ?

If  tan2A / (secA -­ 1)2 = x, then the value of x is

∆DEF is right angled at E. If cosD = 5/13, then what is the value of tanF?

A Rs 100 shirt is offered at 10% discount and a Rs 300 pair of trousers at 20% discount. If Pritam bought 1 shirt and 3 pairs of trousers, what is the effective discount (in %) he got?

A and B together do a job in 12 days and A could do the job in 20 days if he worked alone. How many days would B take to do the job if he worked alone?