Answer:

Step-by-step explanation:
- So first we have to find out the total number of points possible
- So he took 5 tests each with a max score of 100 points, so that's 500 points total
- The final test will be 150 points, so his whole grade is out of 500+150= 650 points
- He has already scored 460 of those 650 points
- Now how much must he get in the least, on the last test in order to make 90%?
- Now we need to find what 90% of 650 points is
- so
- Then we ask ourselves, how much must we add to 460, to get 585 points? 585-460= 125 points
- So Mark needs to get either 125 points or more on the next test to make 90% or more
- Now let's say the letter
means whatever grade number Mark gets on his next test - This number must not be less than 125, so it must be either equal to or greater than 125 points
- So
He will have enough money in his bank to avoid an insufficient fund charge because when you add 250+36.21+94.30 it equals 380.51. He had 386.49 in his account before he withdrawal that money, so he still had money in his account when he got money out.
A)
Kim's age=k
Sister's age=s
k=2s
k+s=36
b)
k=2s
k+s=36
k=36-s
2s=36-s
3s=36
s=12
12*2=24
Kim is 24 and her sister is 12
Hope this helps :)
Answer:
20 each girl
Step-by-step explanation:
40 divided by 2 girls is 20