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Kevin had 20 more stamps than Ronny. Ronny gave Kevin 1 stamp. How many more stamps did Kevin have than Ronny in the end?

 May 18, 2021
 #1
avatar+121056 
+1

Suppose  Kevin  has  N  syamps  and  Ronnie  has N + 20  stamps

 

So  after  the  trade

 

Ronnie   -   Kevin    =

 

( N + 20 + 1)  -  ( N  - 1)  =

 

20  + 1  - (-1)   =  20  + 2   =    22

 

Kevin   had  22  more stamps  

 

 

cool cool cool

 May 18, 2021
 #2
avatar+272 
+3

20 + 1 + 1 = 22 

 

kevin had 22 stamps than Ronny in the end

 May 18, 2021

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