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?

656 diplomas must be ordered

410 diplomas must be ordered

316 diplomas must be ordered

240 diplomas must be ordered

Answer 1

Do it a year at a time. Start with the first year, 10% or .1 times a 1000 is 100
100 freshman bit the dust, leaving 900 sophmores.

Answer 2

Work the 2nd year the same way. Note the dropout rate is 10% each year

Answer 3

so would it be 410?

Answer 4

@radar

Answer 5

Well let me see
The 2nd year 90 drop out leaving 810 juniors
3rd year, 81 juniors drop out, leaving 729 seniors
72.9 will drop out the senior year, lets call that 73 for practical purposes What does that leave who graduate, note it is not 410

Answer 6

so 656

Answer 7

Bingo!

Answer 8

Looks like the medical field is a tough one, but still worth the effort.