Sorting Stella's schoolbus

There are 25 seats and 38 students, so if only one student sat on each seat, there would be 13 students left. When they sit down, there will be 12 seats with only one student per seat.

Suppose that at the time of seating every child got on a row.So there were exactly 13 students that are left. So they must be occupying exactly 13 another seats in the same row as other children are seated. SO THERE are 13 rows that contain 2 seated children. Then the rows containing only one child is 25 - 13=12

Digamos que, ao acomodar-se cada criança pegou uma linha. De exato 13 estudantes estão à esquerda. Então, eles devem estar ocupando provavelmente 13 outros lugares na mesma linha que as outras crianças estão sentadas. Portanto, há 13 linhas que contêm duas crianças sentadas. Em seguida, as linhas que contêm apenas um filho é 25-13 = 12

x is the number of rows with 2 students. y is the number of rows with 1 student. So x + y = 25. So y = 25 - x. Total number of students is 2x + y = 38. By substituting for y, 2x + 25 - x = 38. So x = 13 and y = 12.

I imagined it in my mind as a picture. I first put 1 student in each row which is 25 students already. Next, I did 38 total students subtracted by 25 students that are seated which equals 13 left that haven't sat down yet. I add those 13 students one to each row again which means that 13 rows have 2 students sitting there and 12 rows that have only 1 student sitting.

So stella have 38 students going on a field trip. The bus has 25 rows of seats and each row cointains 2 seats. So we multiply 25 to 2 because they are the rows and the answer is 50. So 50 minus 38 of her students is 12.

25 times 2 =50 50-38=12

Put one student in each row...remaining 13 students.put them in seats...remains 12 empty seats..!!

Let's say there are x amount of rows with 2 people

2x + 1(25-x) = 38 There are x rows with 2 people There are 25 - x rows with 1 person

2x + 25 - x = 38 = x +25 = 38 = x = 13

There are 13 rows with 2 people in each So there are 12 rows with 1 person in each

So the answer is 12

Total rows =25 Empty rows=0 No of rows with more than 1 student=38-25=13 Remaining rows with one student=25-13=12

DATA :
ROWS= 25 STUDENTS = 38

SOLUTION : NUMBER OF STUDENTS - NOUMBER OF ROW = 38-25=13
13 (2) =26 , NUMBERS OF SEATS LEFT 12 ... SO EASY