Question

your medical bill is $2345. Your health insurance covers 70% after a $120 deductible. What amount of the bill will you pay?

Answer 1

The deductible part must be paid by you.
That means you pay the $120 deductible.
Now the amount left to pay is $2345 - $120 = $2225
The insurance pays 70% of $2225.
That means the insurance pays 70% * $2225 = 0.70 * $2225 = $1557.50
The amount you pay is the difference between the total amount and the amount the insurance company pays.
$2345 - $1557.50 = $787.50
You pay $787.50