If $\frac{61}{19}=3+\frac{1}{x+\frac{1}{y+\frac{1}{z}}}$ where $x, y$ and $z$ are natural numbers, then what is $z$ equal to?

If tan (A – B) = x, then the value of x is ;fn tan (A – B) = x,

If the price of apple increases from Rs. 80 per kg to Rs. 100 per kg, by what per cent a person should decrease the consumption of apple so that his expenditure remains same?

What is the distance of the point (2, 3) from the line 2x + 3y + 4 = 0 ?

In the expression xy², the values of x and y are each decreased by 25%. The value of the expression is decreased by

What is the value of sec 330°?

A can build a wall in 30 days which B can build in 40 days. If they build it together and get a payment of Rs. 700, what is B’s share?

50 trees are standing in a line such that distance between any two consecutive trees is same. A car takes 18 seconds to travel from 13th tree to 34th tree. How much time (in seconds) will it take to reach from the first tree to the 50th tree?

A cloth merchant buys cloth from a weaver and cheats him by using a scale which is 10 cm longer than a normal metre scale. He claims to sell cloth at the cost price to his customers, but while selling uses a scale which is 10 cm shorter than a normal metre scale. What is his gain?

If 25% of a number is 6, what is the number which is 50% more than the initial number?