If $$a^{x+y} = a^6$$ and x>y by 2 find x.

The difference between the selling prices of a keyboard at losses 15% and 25% is ₹ 50. Then the cost price of a keyboani is :

A certain job was assigned to a group of men to do in 20 days. But 12 men did not turn up for the job and the remaining men did the job in 32 days. The original number of men in the group was-

Ram and Rahim standing at a distance of 680m run towards each other at a speed of 8 m/sec and 9m/sec respectively. After how long will they meet?

X’s rank is 15th from the top, and in total, there were 40 students in the class, then X’s rank from the bottom in the class is: