Quiz yourself

Question

How many degrees colder was it in December than in September? <img src="https://images.houseofmath.com/eyJidWNrZXQiOiJob20tZnJvbnRlbmQtYXNzZXRzIiwia2V5IjoiTWF0aCBWYXVsdC9QaWN0dXJlcy9OdW1iZXJzIGFuZCBRdWFudGl0aWVzL01lYXN1cmluZy9UYWxsb2dtw6VsaW5nTcOlbGluZ1RlbXBlcmF0dXI0bcOlbmVkZXJFTm55LnN2ZyIsImVkaXRzIjp7InJlc2l6ZSI6eyJ3aWR0aCI6MTIwMCwiaGVpZ2h0Ijo2MzAsImZpdCI6ImNvdmVyIn0sInRvRm9ybWF0IjoicG5nIn19" alt="4 thermometers showing Sept, Oct, Nov, Dec. Sept: 12.5  degrees. Oct: 5 degrees. Nov: -5 degrees. Dec: -15 degrees. " />

Accepted Answer

27.5 degrees

Answer

15  degrees

Answer

10  degrees

Answer

7.5  degrees