A supply company marks up their doctor scrubs by 40%. Find the doctor's cost for a set of scrubs that the supply company buys for $34.

The doctor's cost for a set of scrubs is $47.60

Given:

cost = $34

mark-up = 40%

Mark up based on cost:

$34 * 40%/100% = $13.60 mark up

New price or doctor's cost:

$34 + 13.60 = $47.60

It can also be computed this way.

$34 * 140%/100% = $47.60