There are 7/8 kilograms of salt in the kitchen. Brook used 2/15 of the salt when she was helping to prepare dinner. How much salt did she use?

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick