Question

Fatima 21 days at camp finished on 30 September on what date did it begin​

Answer 1

Answer:

Here is your answer in step by step .

Step-by-step explanation:

1. No of days in the camp = 21
2. Day when Fatima's camp finish = 30 september  
3. Day when Fatima's camp began = 30 - 21 [ I have posted the attachment of calculation . check it . ]    
4. So , 30 september - 21 days = 9    
5. To recheck the answer follow this method = 21 + 9 = 30
6. So after rechecking with the answer you got for 30 - 21  , if the rechecked answer is 30 then your answer to the question will be correct.
7. So the date when it began was 9th september