A person earns RS 16300 and saves rs 600 per month. Find the ratio of his income to his expenditure

Iam unsure about what the proof is, therefore as much as wish to i can not.

$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