Question

Две бригады сшили 441 детский костюм ,роботая вместе.Первая бригада изготавливала 28 костюмов в час,а вторая 21 костюм в час .Сколько часов бригады шили костюмы. я могу решить сам но думаю не правельный ответ

Answer 1

28+21=49 костюмов 2 бригады шили за час вместе
441:49=9 часов работали 2 бригады

Answer 2

28+21 = 49 костюмов/час две бригады
441:49= 9 часов шили

Answer 3

Calculation of Hours to Sew Costumes

To calculate the number of hours it took the two brigades to sew the costumes, we need to determine the total number of costumes sewn by both brigades and divide it by the combined hourly production rate of the two brigades.

Let's calculate it step by step:

1. The first brigade sews 28 costumes per hour. 2. The second brigade sews 21 costumes per hour. 3. The total number of costumes sewn by both brigades is 441.

To find the number of hours it took to sew the costumes, we can use the following formula:

Total number of costumes / (Production rate of brigade 1 + Production rate of brigade 2)

Let's substitute the values into the formula:

441 / (28 + 21)

Calculating this expression, we find:

441 / 49 = 9

Therefore, it took the two brigades a total of 9 hours to sew the 441 costumes.

Please note that the sources provided did not contain specific information about the given scenario. Therefore, the calculation is based on the information provided in the question.