A company sells kites. It sells Basic kites and Designer kites.

2 Basic kites and 2 Designer kites have a total weight of 400 g.
4 Basic kites and 1 Designer kite have a total weight of 440 g.

Basic=g
Designer=g

Work out the weight of a Basic kite and the weight of a Designer kite.

The price dropped by $5.45.

Step-by-step explanation:

    Initial price = $50.00

      Less 10 % =   -5.00

 1st sale price =   45.00

       Less 10% =    -4.50

2nd sale price =   40.50

      Plus 10 % =   +4.05

     Final price = $44.55

Change in price =   final   -  initial

                          =   44.55 - 50.00

                          = -$5.45

The price dropped by $5.45.