State Electricity Board gives a discount of 15% if the electricity bill is paid before the due date. If a person gets a discount of Rs 54, then what was the original bill amount?

The total of the ages of Kiran, Shantanu and Saransh is 93 years. Ten years ago, the respective ratio of their ages was 2 : 3 : 4 . What is the present age of Saransh?

The average weight of 5 men is increased by 4 kg. If one of them who weigh 121 kg is replaced by another man, then what is the weight of the new man? 

The average age of 32 boys of a class is equal to 15 years. When the age of the class teacher is included the average becomes 16 years. Find the age of the class teacher. 

In an examination in which full marks were 700, A gets 20 % more than B, B gets 20 % more than C, and Cgets 15 % less than D. If A got 576 marks, then what percentage of full marks did D get? 

In a lottery, there are 7 prizes and 21 blanks. If a lottery is drawn at random, then what is the probability of getting a prize?

In a single throw of a dice, what is the probability of getting a number greater than 3?

The difference between two whole numbers is 110 and the numbers are in ratio 2 : 7. Find the sum of the two numbers.