Linear Equations in One Variable Maths - Linear Equations in One Variable

I have Rs 1000 in ten and five rupee notes. If the number of ten rupee notes that I have is ten more than the number of five rupee notes, how many notes do I have in each denomination?

Four-fifth of a number is more than three-fourth of the number by 4. Find the number.

The sum of the age of Anup and his father is 100. When Anup is as his father now, he will be five times as old as his son Anuj is now. will be years older then Anup is now, when Anup is as old as his father. what are their ages now?

A lady went shopping and spent half of what she had on buying hankies and gave a rupee to a beggar waiting outside the shop. She spent half of what was left on a lunch and followed that up with a two rupee tip. She spent half of the remaining amount on a book and three rupees on bus fare. When she reached home, she found that she had exactly one rupee left. How much money did she start with?

The difference between the squares of two consecutive numbers is 31 . Find the numbers.
 

Seeta Devi has Rs 9 in fifty-paise and twenty five-paise coins. She has twice as many twenty-five paise coins as she has fifty-paise coins. How many coins of each kind does she have?