Question 436208
p=20+.30*(c/1000)
working backwards

c/1000 is the amount of coverage (c) divided by 1000 which would be how many 1000 of coverage the guy has.
he pays 30 cents for each 1000 dollar of coverage. so we multiply the last amount in coverage by .30
no matter how much coverage he has he has to pay an extra 20

We are told his premium is 95 so we set it all equal to 95

95=20+.30*(c/1000)

solve for c
c=250,000