A stationer bought 200 ball pens for Rs. 1800. 55 of them were found damaged and thrown away. He sold the rest at Rs. 13 each. Find his gain or loss percentage. ​

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50.

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?