Convert 25 degrees Celsius to degrees Fahrenheit using F = 1.8 x C + 32.
Answer and explanation
Correct answer: C. 77 degrees F
- Step 1: 1.8 x 25 = 45. Step 2. 45 + 32 = 77. Answer: 77 degrees F. Why not the others: 45 degrees F: the constant 32 was left out. 57 degrees F: the factor 1.8 was left out. 92.4 degrees F: this value comes from a slip in the arithmetic.
Practise more Percentages, Ratios and Formulas.
Free questions with an explanation for every one, and full timed TMS (Test für Medizinische Studiengänge) practice mock tests.
More Percentages, Ratios and Formulas questions
- A price falls by 20 percent and then rises by 25 percent. What is the net change?
- A test finds 90 of 100 people who have a disease. What is its sensitivity?
- A disease has a prevalence of 2 percent in a town of 10,000 people. How many people have it?
- In a group of 10,000 people, 200 have a disease. The test has a specificity of 95 percent. About how many healthy people test positive?
- A population of 1,000 grows by 10 percent per year. How large is it after two years?
- A vehicle covers 120 km at 60 km/h and then 120 km at 40 km/h. What is its average speed?