遺產題解答(吾明,唔該幫幫手)

Given :
大佬現在年齡係 23歲,
二佬現在年齡係21歲,
細佬現在年齡係16歲;

n年後,
大佬年齡係 23 + n 歲,
二佬年齡係 21 + n 歲,
細佬年齡係 16 + n 歲;
總年齡係 (23+n) + (21+n) + (16+n) = (60+3n)

n年後可得遺產:
大佬係 6000000 * (23 + n) / (60 + 3n),
二佬係 6000000 * (21 + n) / (60 + 3n),
細佬係 6000000 * (16 + n) / (60 + 3n)

From Given: 大佬可得遺產 - 細佬可得遺產 = 437500
[6000000 * (23 + n) / (60 + 3n)] - [6000000 * (16 + n) / (60 + 3n)] = 437500
6000000 [(23 + n) - (16 + n)] = 437500 * (60 + 3n)
42000000 = 26250000 + 1312500n
15750000 / 1312500 = n
12 = n

Put n = 12 into 二佬年齡,
二佬年齡係 21 + n 歲 = 21 + 12 歲 = 33歲.

Ans. n年後伯伯瓜左, 二佬年齡係 33歲.

I hope I can help you.