Step-by-step explanation:

To calculate the new price after a 75% markup, we need to add 75% of the original price to the original price.

First, let's find 75% of 50:

75% of 50 = (75/100) * 50 = 0.75 * 50 = 37.5

Now, we can calculate the new price by adding the markup to the original price:

New price = Original price + Markup

= 50 + 37.5

= 87.5

Therefore, the new price after a 75% markup is 87.5.