How much it be sold to yield only 10% profit on the cost?

Question

A refrigerator was sold $2730, yielding a 30% profit on the cost. For how much it be sold to yield only 10% profit on the cost?

Answer 1

2730$=30% profit..

so kost=70% av 2730=0.7*2730=1911$

10% profit on 1911$...10% av 1911=0.1*1911=191.10$

so that pries=1911+191.10=2,102.10$