Answer:
8
Step-by-step explanation:
5 + 6 + 12 + 7 + 8 + 10 + 8 = 56
number of value = 7
mean = 56 ÷ 7 = 8
To build a school;
20 workers -> 18 days.
So 1 worker -> 18/20 days.
So; 12 workers -> (12×18)/20 days.
-> (12×9)/10 days
->10.8 days.
so 10.8 days is your answer.
Hope it helps...
Regards;
Leukonov/Olegion
