Need with percent asap! will mark
find n
15% of 90 is n

20% of n is 80

n% of 50 is 5

15% of 90 is 13.5
20% of 400 is 80
10% of 50 is 5
n=13.5
n=400
n=10

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.