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Question

Find the value of a + b if 2a+5b=141.


  1. 6

  2. 7

  3. 9

  4. 8


Solution

The correct option is B

7


141 can be written as shown         
16+125=141

16= 24 and 125= 53
141= 24 + 53

2a+5b = 24+53
   a = 4, and b = 3
     a + b = 7

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