Math Exam, page-8

	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.
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