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Anna, Boris, and Clara thought of one number each. Anna's number increased by 20 is 21 greater than Boris's numbers decreased by 22. Boris's number decreased by 20 is 21 greater than Clara's number increased by 22. How much less is Clara's number than anna's number. Please answer fast!

Respuesta :

Answer:

See below in bold.

Step-by-step explanation:

Let Anna's, Boris and Clara's numbers be a b and c.

a + 20 = b - 22 + 21

b - 20 =  c + 22 + 21

a + 20 = b - 1

b - 20 = c + 43

a  - b  + 20 = -1      

Adding the last 2 equations:

a  = c + 42

c = a - 42

So Clara's number is 42 less then Anna's number.

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