Question

a man pays 330 each month for his gym membership what is the change in the amount of money in his account after two thirds of a year

Answer 1

$\dfrac{\ 330}{1\,month}\times\dfrac{12\,month}{1\,year}\times\dfrac{2}{3}\,year\\\\=\ 2640$

The account will have decreased by $2640 after 2/3 year.