Answer:
11 and 11 in each of each fish tank or put more fish in the rectangular fish tank
1. 20 x 8 = 160 m
2.
January to November = 11 months.
11 flats are painted every year.
100 flats / 11 flats per year = 9 years + 1 month
the next time it will be painted is September 2019.
please give more clarification
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