Heres my math - if wrong let me know| | | | | | | | | | | | | |...

  1. 13,644 Posts.
    lightbulb Created with Sketch. 546
    Column 1 Column 2 Column 3 Column 4 Column 5 Column 6 Column 7 Column 8 Column 9 Column 10 Column 11 Column 12 Column 13 Column 14 Column 15 Column 16 Column 17 Column 18 Column 19 Column 20
    0 Heres my math - if wrong let me know                                      
    1 (would like to know the correct answer)                                      
    2                                        
    3 Oldest wife income 25 per MONTH                                  
    4 Money left 1700                                    
    5 Number of days 16.06 Days                                  
    6 Let "$B$6'' equal the number of days   (oldest wifes income is 1 month - (I used 30 days)                          
    7                                        
    8 Oldest Wife time 13.38333                                    
    9 Wife 2 26.76667                                    
    10 Wife 3 53.53333                                    
    11 Wife 4 107.0667                                    
    12 Wife 5 214.1333                                    
    13 Wife 6 428.2667                                    
    14 Wife 7 856.5333                                    
    15                                        
    16 Sum 1699.683 (excel is fairly close                                
    17                                        
    18 (x is the number of days)                                      
    19 Formula "=25*X/30+50*X/30+100*X/30+200*X/30+400*X/30+800*X/30+1600*X/30 = 1700"                      
    20                                        
    21 Algebra reduces this to "=3175*x/30 = 1700"                                  
    22   "x =1700/3175*30                                  
    23   "x= 16.06"days                                  
    24                                        
    25   (31days would give a different result") - however the author of the question needs to clarify the number of days that the oldest wife can live on her 25 rupaye (one month is leaves too much variance)
    26   (ie 28 days lunar month, or 30 /31 days), working it out as 1/12 of a year (being on month) gives an even greater degree of error.            
    27                                        
    28                                        
    29                                        
 
arrow-down-2 Created with Sketch. arrow-down-2 Created with Sketch.