Step 1: Mother’s holding as a fraction of \(T\):
The mother (Alphonso’s wife) first has \(\frac{T}{2}\). Each son gets \(\frac{T}{6}\). Ben dies: Carl and Dave each get \(\frac{T}{24}\) more, so Carl and Dave each have \(\frac{5T}{24}\). Carl dies: Dave gets half of Carl’s \(\frac{5T}{24}\), that is \(\frac{5T}{48}\), so Dave has \(\frac{5T}{24}+\frac{5T}{48} = \frac{15T}{48} = \frac{5T}{16}\). Dave dies: the mother gets half of it, \(\frac{5T}{32}\).
Step 2: Equate to the given amount:
The mother now has \(\frac{T}{2}+\frac{5T}{32} = \frac{21T}{32} = 15{,}75{,}000\). So \(T = \frac{1575000\times 32}{21} = 24{,}00{,}000\), that is Rs. 24 lakh.
Step 3: Check with \(T = 24\) lakh:
Wife 12 lakh; each son 4 lakh. Ben dies: widow 2, Carl 5, Dave 5. Carl dies: widow 2.5, Dave 7.5. Dave dies: widow 3.75, mother gets 3.75. Mother: \(12+3.75 = 15.75\) lakh \(= 1{,}575{,}000\). Correct.
Final Answer:
The correct option is (1): Rs. 24 lakh.