Question

Во дворе 6 кур и несколько уток .они дают в год 920 яиц : каждая курица - 120 яиц , а каждая - 50 яиц . сколько уток во дворе?

Answer 1

1) 6*120 = 720 (яиц)
2) 920-720 = 200 (яиц)
3) 200/ 50 = 4 (утки)
Ответ: во дворе 4 утки

Answer 2

120*6=720 - яиц снесли куры
920-720=200 - яиц снесли утки
200:50=4 - всего уток
Ответ:4

Answer 3

Calculating the Number of Ducks

To calculate the number of ducks in the yard, we can use the given information that there are 6 chickens and a total of 920 eggs produced annually, with each chicken producing 120 eggs and each duck producing 50 eggs.

Step 1: Let's denote the number of ducks as D.

Step 2: We know that each chicken produces 120 eggs, so the total number of eggs produced by chickens is 6 chickens * 120 eggs/chicken = 720 eggs.

Step 3: We also know that each duck produces 50 eggs, so the total number of eggs produced by ducks is D ducks * 50 eggs/duck = 50D eggs.

Step 4: The total number of eggs produced annually is 720 (from chickens) + 50D (from ducks) = 720 + 50D.

Step 5: According to the given information, the total number of eggs produced annually is 920.

Step 6: Therefore, we can set up the equation 720 + 50D = 920 to solve for the number of ducks.

Solving for the Number of Ducks

Let's solve the equation to find the number of ducks in the yard.

Step 7: Subtract 720 from both sides of the equation: 50D = 920 - 720.

Step 8: Simplify the equation: 50D = 200.

Step 9: Divide both sides by 50: D = 200 / 50.

Step 10: Calculate the number of ducks: D = 4.

Conclusion

There are 4 ducks in the yard.