It's tree planting week in Nectar City.
An average of 15 trees were planted from Monday to Friday.
On Saturday and Sunday, there were more volunteers and the average number of trees planted in the seven days became 23.
How many trees were planted on Saturday and Sunday?
An average of 15 trees were planted from Monday to Friday.
On Saturday and Sunday, there were more volunteers and the average number of trees planted in the seven days became 23.
How many trees were planted on Saturday and Sunday?
Jawab:
86 trees.
Penjelasan dengan langkah-langkah:
To find the number of trees planted on Saturday and Sunday, we need to determine the total number of trees planted during the weekdays (Monday to Friday) and subtract it from the total number of trees planted in the seven days.
The average number of trees planted from Monday to Friday is given as 15. Since there are 5 weekdays, the total number of trees planted during the weekdays is 15 trees/day * 5 days = 75 trees.
The average number of trees planted in the seven days, including Saturday and Sunday, is given as 23. To find the total number of trees planted during the seven days, we can multiply the average by the total number of days, which is 7: 23 trees/day * 7 days = 161 trees.
To find the number of trees planted on Saturday and Sunday, we subtract the number of trees planted during the weekdays from the total number of trees planted in the seven days: 161 trees - 75 trees = 86 trees.
Therefore, the number of trees planted on Saturday and Sunday is 86 trees.