Really need help quick GR5 question

Amount won : $3,000,000

Step-by-step explanation:

Let the amount won be =100 x

Amount spent on house :

Remaining amount = 100x - 80x = 20x

Amount spent on yacht :

Remaining amount = 20x - 15x = 5x

Amount spent on a trip :

Remaining amount =

This amount is given for charity :

But given :

           Amount given to charity is  50000

Therefore ,

Therefore , the amount won on lottery is = 100x = 100 ( 30000) = 3,000,000