Question

4. Первая бригада может выполнить работу за 8 часов, а вторая в 12 раза медленнее. За сколько часов могут выполнить работу обе бригады, работая вместе? помогите пж

Answer 1

Ответ:

8:12=0,6

8+0,6=8,6

Answer 2

Calculating Work Efficiency of Both Teams

The first team can complete the work in 8 hours, while the second team is 12 times slower. This means the second team can complete the work in 8 * 12 = 96 hours.

Combined Work Efficiency

When both teams work together, their combined work efficiency is the sum of their individual work efficiencies. Therefore, the combined work efficiency is 1/8 + 1/96 = 13/96.

Time Taken for Both Teams to Complete the Work Together

To find the time taken for both teams to complete the work together, we can use the formula: Time = 1 / Combined Work Efficiency

Substituting the combined work efficiency into the formula: Time = 1 / (13/96) = 96 / 13 ≈ 7.38 hours

Therefore, both teams working together can complete the work in approximately 7.38 hours.