Answer:$570
Step-by-step explanation:
At beginning he had 500
He deposited =134.50+55.50=190.00
Total in account is 190+500=690
He withdrew =64.50+55.50=120.0
Total in account =690-120=$570
Starting more simply, if we wanted to know how many students like pink in general, that's 68/100. We could do that for each single category and the fractions would add together to equal 1. Now say we wanted to know something about that 68/100 people. That 68 is our new 100%, or another way of looking at it is if we take however many people like pink and don't like black and those that do like black, they will equal 68/68.
The number of people that like pink but don't like black is 41/68 and those that like pink and black are 27/68. 27+41=68 For the question of your problem it is asking about those that do not like pink which you can tell from the table or use from my saying 68/100 like pink is 32. Now you can split that into those that do or don't like black, and the two results will equal 32/32.
An algebraic expression would be:
720-20x
x=the number of days
Testing out the expression:
Ex: 9 days of deleting photos
720-20(9)
720-180
=540 photos left
Hope this helps!
-Benjamin
