I know you have 1 and 3 right but I'm sorry about not knowing the rest.
Rational sets also known as ratios
It will take them 10 days to have the same amount of credits.
The only thing I did was to keep adding what they where earning per day!
<span>( 144 + 6 x 8 ) ÷ 3 = g
(144 + 48) </span>÷ 3 = g
192 ÷ 3 = g
64 = g or g = 64
627 and I need to hit 20 characters and ur welcome