Question

The very rigorous medical program at a local university has a 10% drop out rate for each year. If the school admits 1,000 freshmen, how many diplomas will need to be ordered 4 years later?

Answer 1

just find 10% of 1000, then subtract it and find 10% of what's left, do that again 2 more times and you've got your answer

Answer 2

so approximately 656 diplomas will need to be ordered

Answer 3

You can also see it as:
90% stay each year
90% = 0.9

Current year * 0.9 = next year

You're doing it for four years, so you'll be multiplying it by 0.9 4 times.

1000 * 0.9 * 0.9 * 0.9 * 0.9 = 1000 * 0.9^4 approx = 656

Answer 4

thanks guys ! can you help me out with another one?

Answer 5

yh! bluepig's way is much easier and quicker

Answer 6

post it