Aschool bus has 25 seats, with 5 rows of 5 seats. 15 students from the first grade and 5 students from the second grade travel in the bus. how many ways can the students be seated if all the first-grade students occupy the first 3 rows?

answer:   78125

step-by-step explanation:

since, the total number of seats = 25

and, there are 5 rows of 5 seats.

number of students in first grade = 15

number of students in second grade = 5

also, all the first-grade students occupy the first 3 rows,

thus, in first row total number of possible arrangement = 15

in second row total number of possible arrangement = 15

in third row total number of possible arrangement = 15

in fourth row total number of possible arrangement = 5 ( because all the first grade students got their seats )

in fifth row total number of possible arrangement = 5

thus, the total number of possible arrangement of sitting in 25 seats = 15 × 15 × 15 × 5 × 5 = 3125 × 25 = 78125

true? is that what you're asking or do you mean something else?

step-by-step explanation:

ok one would be money, and the other would be refreshments or something similar. if each bag of popcorn is 5.00 and each drink is half of that that means drinks are 2.50 the proper way to do that would to look and see how much of each you can buy without exceeding a limit of 30.00