Arithmetic Sequence: Finding December's Food Price in 45→30→48 Pattern

Question

The series describes the price of a meal in a food chain from January to December.

, 45 , 42 , 39 , 36 , 33 , 30

. _ , _ , _ , _ , _ , 48

How much does food cost in December?

00:00 Find the meal price in December

00:04 Find the difference between each term

00:07 This is the pattern of the sequence

00:18 Calculate the missing terms according to the pattern we found

00:55 And this is the solution to the question