Question

Алёша с папой принесли с рыбалки улов:лещей,окуней,ёршей:всего 37 рыб.Окуней былов 5 раз больше чем лещей,а ёршей на 9 больше,чем лещей.скольколещей ,окуней и ёршей поймали Алёша с папой?решить задачу подбором и с помощию схематического чертежа.

Answer 1

пусть х было лещей,тогда 5х было окуней,а х+9 поймали ершей.

Составим уравнение:

х+5х+х+9=37

7х=37-9

7х=28

х=28:7

х=4 леща было поймано.

1)4*5=20 окуней.

2)4+9=13-ершей  поймали Алеша с папой

Answer 2

Problem Analysis

Алёша and his father caught a total of 37 fish during their fishing trip. The number of pikeperch (окуней) was 5 times greater than the number of bream (лещей), and the number of roach (ёршей) was 9 more than the number of bream. We need to determine how many bream, pikeperch, and roach were caught by Алёша and his father.

Solution

Let's assume the number of bream caught is x. According to the problem, the number of pikeperch is 5 times greater than the number of bream, so the number of pikeperch is 5x. Similarly, the number of roach is 9 more than the number of bream, so the number of roach is x + 9.

We know that the total number of fish caught is 37, so we can write the equation:

x + 5x + (x + 9) = 37

Simplifying the equation:

7x + 9 = 37

Subtracting 9 from both sides:

7x = 28

Dividing both sides by 7:

x = 4

Therefore, Алёша and his father caught 4 bream, 20 pikeperch, and 13 roach.

Schematic Diagram

Here is a schematic diagram to represent the solution visually:

   Bream (x)       Pikeperch (5x)       Roach (x + 9)
   ________        ______________       ___________
  |        |      |              |     |           |
  |   4    |      |      20      |     |    13     |
  |________|      |______________|     |___________|

So, Алёша and his father caught 4 bream, 20 pikeperch, and 13 roach.

Please let me know if I can help you with anything else.