Amy saved 5/8 of her salary every month and she spent the rest.
Ben saved 3/7 of his salary every month and he spent the rest which amounted to $600.
Amy took 1 1/6 years less than Ben to save $12600.
(a) What was Ben's monthly salary? [Ans: $1050]
(b) What was Amy's monthly salary? [Ans: $1440]