Question

В семействе кенгуру двое самых легких весят 25 % от суммарного веса всех членов семейства, а трое самых тяжелых 60 %. сколько весят всего кенгуру в этом семействе

Answer 1

25:2=12,5% средний вес легких
60:3=20% средний вес тяжелых
25+60=85%
100-85=15% это и не легкий и не тяжелый, это средний (два не могут быть)
Значит 2+3+1=6 кенгуру в семействе

Answer 2

Calculation of Total Weight of Kangaroos in the Family

To calculate the total weight of kangaroos in the family, we need to consider the weights of the lightest and heaviest kangaroos as a percentage of the total weight.

Let's assume the total weight of all the kangaroos in the family is x.

According to the given information: - The two lightest kangaroos weigh 25% of the total weight. - The three heaviest kangaroos weigh 60% of the total weight.

Based on this information, we can set up the following equation:

0.25x + 0.6x = x

Simplifying the equation, we have:

0.85x = x

Dividing both sides of the equation by 0.85, we get:

x = 1

Therefore, the total weight of all the kangaroos in the family is 1.

Please note that the given information does not provide specific weights for the lightest and heaviest kangaroos or the total weight of the family. The calculation assumes that the total weight is 1 for simplicity.