i need help in questions.1/5?

Question

Around 1660 s the thermometers in Florence, Italy, were made so that 50 oFl correspond to 44 oR (Rheomir scale) and 0 oFl = -15 oR. On the other hand , on the Rheomir scale water freezes at 0 oR and boils at 80 o R. Find the value of 74 oFl on the Celsius scale.

Answer 1

Apply the following:
°C = (°F − 32) /1.8