Question

На птичью ферму привезли корм,кокого хватилр бы качькам на 30 дней , а гусям- на 45 дней . На сколько дней хватит привезённого корма качькам и гусям вмести

Answer 1

Решение
1/30+1/45 = 5/90 = 1/18
1: 1/18 = 18 дней
ответ 18 дней

Answer 2

Calculating Bird Feed Duration

To calculate how long the bird feed will last for ducks and geese, we can use a simple ratio and proportion calculation.

Given: - Feed for ducks lasts 30 days - Feed for geese lasts 45 days

Let's denote the amount of feed as D for ducks and G for geese.

We can set up the following proportion to find out how long the feed will last for both ducks and geese together:

Ducks' feed duration : Geese' feed duration = Ducks' feed amount : Geese' feed amount

Using this proportion, we can calculate the duration for both ducks and geese together.

Calculation

Let's denote the total duration the feed will last for both ducks and geese together as T.

We can set up the following equation based on the given information:

D/30 = G/45

Solving for D and G in terms of T: D = (30/T) * T G = (45/T) * T

Now, we can calculate the combined duration T for both ducks and geese.

Solution

To find the combined duration T: D + G = T

Substituting the values of D and G: T = (30/T) * T + (45/T) * T

Solving for T: T = (30*45) / (30+45) T = 1350 / 75 T = 18

Conclusion

The feed brought to the bird farm will last for 18 days for both ducks and geese together.