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This is a part whole question.

1.  Day 1 spend 1u. left 9u. Total 10u

2.  Day 2. 1/4 × 10 = 2.5u spend.

   Day 1    Day 2 left     

total

 
Quantity  1u 2.5u 5.5u 9u  
           

2.5u – 1u = 1.5u

1.5u = 5

1u = 3 1/3

9u = 9 × 3 1/3 = 30

 

Note 

The question is misleading by the words “he spent 1/9 of what he had left”. Instead the word left should be ignored.

 

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