The person gets paid $587 every week, you have to determine the 50%, 30% and 20% of the budget for an entire month (4weeks)
So the first step is to calculate the monthly budget by multipliying what this person makes per week by 4:

Next is to calculate the percentages
To calculate the 50% of $2348 you have to multiply it by 50 and divide it by 100

To calculate the 30% of $2348 you have to multiply it by 30 and divide it by 100

And finally calculate the 20% by multiplying it by 20 and divide by 100

So the monthly budget for a person that gets paid 587 weekly are:
50%= $1174
30%= $704.40
20%= $469.60