How would you solve this question?

Question

Sandra buys an insurance policy that costs $7.43 for every $2500 of insurance. If she buys $30 000 of insurance,how much does it cost her? .. Please help me .. I need to know all the steps to this question.. Thanks in advance!

Answer 1

Every 2500 of insurance will cost 7.43

(insurance)x = (cost)

hence, 2500x = 7.34

so, x = 0.002936

If she buys $30 000 of insurance:

cost = 30000 * 0.002936 = 88.08

Answer 2

another method: use proportions to solve this problem

write " $7.43 for every $2500" as 7.43/2500

set that equal to x/30,000 "cost for every $30,000"

cross multiply and you should get 2500x=30,000 x 7.43

2500x=222,900

divide boths sides by 2500 and x=$89.16 for $30,000 of insurance

Answer 3

Cost per 1 dollar of insurance = m

m=7.43/2500

COST = 30000(m)