if 60% of fruits are durians then there’s 40% that are not, right?
so if we have 60% of the REMAINING fruits that are mangos then we know that there will be 60% of 40%
of the total number that are mangos. this means that there will be 40% of 40% the total that are NOT mangos or durians.
the rest are watermelons and there are 112 watermelons so 40% of 40% is 16% of the total is 112.
since the durians are 60% of the total then there are 112 x 5 durians = 560
