Dr Pooranmal and Ashfaq A Khan Solutions for Chapter: Direct and Inverse Variations, Exercise 2: EXERCISE 8.2

Reading $15$ pages of a book everyday, a girl can finish the book in $24$ days.How many days will she take to finish it, if she reads $18$ pages everyday.

A camp has provisions for $300$ Persons for $30$ days .If $60$ People left the camp, how long will the provision last.

$18$ men can reap a field in $35$ days.For reaping the same field in $21$ days, how many men are required.

A garrison of $200$ men had food for $18$ days, but due to the arrival of reinforcement of some men, food lasted for $15$ days only.How many more men arrived.

A man cycles to his home at an average speed of $12 \mathrm{km}/\mathrm{h}$.It takes him $20$ minutes to reach home. if he wanted to reach home in $15$ minutes. What should be his average speed.

Rajan has enough money to buy $75$ machines worth $₹250$ each. How many machines he can buy if machine is costing $₹125$ more

A bookseller has enough money to buy $25$ books worth $₹325$ each.How many books he will be able to buy if he get a discount of $₹12.50$ on each book.

A work-force of $420$ men with a contractor can finish a certain piece of work in $9$ months. How many extra men must be employ to complete the job in $7$ months.