Assume you purchased 200 shares of GE common stock on margin at 70 per share from your broker. if the initila margin is 55 how much did you borrow from the broker

Can someone me and explain..will award brainlest!

Acontainer holds 0.7 liters of oil and vinegar. 3/4 of the mixture is vinegar. how many liters of oil are in the container? express your answer as both a fraction and a decimal.

The floor of a building consists of 3000 tiles which are rhombus shaped and each of it's diagonals are 45 cm and 30 cm in length. find the total cost of polishing the floor, if the cost per m² is rs. 4.