Question

Одна портниха может сшить 150 фартуков за 10 дней, другая может выполнить эту работу за 15 дней. За сколько дней смогут выполнить эту работу обе портнихи, работая вместе?

Answer 1

1)150:10=15(ф)-одна портниха за 1 день
2)150:15=10(ф)-вторая портниха за 1 день.
3)15+10=25(ф)-обе портнихи за 1 день.
4)150:25=6(дней)-нужно обоим портнихам,чтобы сшить 150 фартуков
Ответ:6

Answer 2

Calculation of Work Efficiency

To determine how long it will take for both tailors to complete the work together, we need to calculate their individual work rates.

Let's assume that the first tailor can sew 150 aprons in 10 days, and the second tailor can sew 150 aprons in 15 days.

The work rate of the first tailor can be calculated as 150 aprons / 10 days = 15 aprons per day. The work rate of the second tailor can be calculated as 150 aprons / 15 days = 10 aprons per day.

Combined Work Rate

To find the combined work rate of both tailors, we can add their individual work rates together.

The combined work rate is 15 aprons per day + 10 aprons per day = 25 aprons per day.

Calculation of Completion Time

To calculate how long it will take for both tailors to complete the work together, we can divide the total number of aprons by the combined work rate.

Let's assume the total number of aprons to be sewn is 150.

The time it will take for both tailors to complete the work together can be calculated as 150 aprons / 25 aprons per day = 6 days.

Therefore, both tailors working together will be able to complete the work in 6 days.