you are in a room with other students and are asked to get in groups of 3. when finished, there are 21 groups of 3. how many students are in the room?
21 groups and 3 in each group...
21 x 3
Agree, but online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown.
To determine the number of students in the room, we can multiply the number of groups by the number of students in each group.
Given that there are 21 groups of 3 students, we can calculate the total number of students in the room by multiplying these two values: 21 (groups) × 3 (students per group).
So, there are 63 students in the room.
To find out how many students are in the room, we can set up an equation. Let's assume the total number of students in the room is "x". If they form 21 groups of 3, then the total number of students (x) should be evenly divisible by 3.
So, we can write the equation as: x / 3 = 21
To solve for x, we can multiply both sides of the equation by 3:
x = 21 * 3
Calculating the right side of the equation:
x = 63
Therefore, there are 63 students in the room.