Question

The number which is to be added to 78.9 to get 100.08 is ________.​

Answer 1

100.08=78.9+x

100.08-78.9=x

21.18=x

Answer 2

Answer:

21.18

Step-by-step explanation:

Let the number be a

a + 78.9 = 100.08

⇒ a = 100.08 - 78.9 = 21.18

21.18 is to be added to 78.9 to get 100.08