Question

A man earns * 40 per day and a woman earns * 30 per day. The man is working for x day
in a month while the woman is working for y days in a month. They spend * 30x and
* 25y respectively. What is their total savings?​

Answer 1

man earn => 40x

women earn => 30y

...........

man spend => 30x

women spend => 25y

..........

man saving => 40x - 30x = 10x

women saving => 30y - 25y => 5y

hence,

total saving => 10x + 5y