New Financial Ratios

Hello tutor,

“Fritwell has asset turnover of 2 and operating profit margin of 10%. It is It is launching a new product which is expected to generate additional sales of $1.6 million and additional profit of $120,000. It will require additional assets of $500,000.
Assuming there are no other changes to current operations, how will the new product affect these ratios?”

I do not understand why the solution of that question is like this “The new product will have an operating profit of 120 1 1,600 = 7.5%, so will reduce the current margin. It will have a ROCE of 120 I 500 = 24%, higher than the current 20%.”

I think the solution does not make sense, as the numbers are all additional, not the new figures after the company sells the new product.

Thank you tutor!