what is the equivalent markup based on cost of a water fountain that is marked up 69% based on the selling price?

More data needed. Equivalent of what?

To find the equivalent markup based on cost when the water fountain is marked up 69% based on the selling price, we can follow these steps:

Step 1: Let's assume the selling price of the water fountain is $100.
Step 2: Since the markup is 69% based on the selling price, we can calculate the markup amount by multiplying the selling price with the markup percentage. In this case, the markup amount would be 0.69 * $100 = $69.
Step 3: Now, to find the cost of the water fountain, we subtract the markup amount from the selling price. In this case, the cost would be $100 - $69 = $31.
Step 4: Finally, to calculate the equivalent markup based on cost, divide the markup amount by the cost and multiply by 100. In this case, the equivalent markup based on cost would be (69 / 31) * 100 = 222.58%.

Therefore, the equivalent markup based on cost for the water fountain marked up 69% based on the selling price would be 222.58%.