Quantitative Aptitude - Arithmetic Ability Questions

(1 + sinA)/(1 - sinA) is equal to?

A vendor buys 12 bananas for Rs 60 and sells 5 bananas for Rs 32. What will be his gain (in %)?

Puneet purchases 5 dozens of oranges at the rate of Rs 120 per dozen. He sold each one of them at the rate of Rs 11.5. What is the profit (inpercentage) of Puneet?

A man travelled a distance of 50 km in 8 hours. He travelled partly on foot at 5 km/hr and partly on bicycle at 7 km/hr. What is the distance (in kms) travelled on foot?

A spaceship travels at 810 km/hr. How many metres does it travel in 1/5th of a second?

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?

The simplest value of 38-212+20318-227+45 is

If x2+ y2+ z2= xy + yz + zx, then what is the value of (7x + 3y – 5z)/5x?