Explanation:
that does not make any sense at all. if you copied this correctly, then many greetings to your teacher. this, as it is written, is not possible.
you have 96 houses.
when you sell 1/4 of the houses, (= 96 × 1/4 = 24) you have 3/4 of the houses left (= 96 × 3/4 = 96 - 96 × 1/4 = 72).
so, what you have left are 3/4 of the houses. NOT 1/6.
3/4 is NOT 1/6.
1/6 of the original 96 houses is
96 × 1/6 = 96/6 = 16 houses
but if 72 (the remaining houses after the first sell of 1/4) is supposed to be 1/6, then the total number of houses at the beginning would have been
72 × 6 = 432 houses. NOT 96.
so, you see, this is again NOT possible. no matter how we twist and turn it.