What is the ratio of 25: 57 as a fractions?

25 : 57

= 25 / 57

No number can divide into 25 and 57 so the fraction remains as:

25 / 57

$250 deductible means jane must pay the first $250 of her bill. so the insurance company paid = (80% of bill) - deductible = (0.8 x $2550) - $250 = $2040 - $250 = $1790 and jane's cost is = (bill) - (insurance payment) = $2550 - $1790 = $760