Question

3. There is an unknown number of people in the cafeteria during lunch. Then.....Each person had 1 friend come sit with them, tripling the amountThen the entire group divided into 5 groups, and all but one group left and wentoutside, so only 1/5 of the total people were left in the cafeteria.8 more people came into the cafeteria.The total number of people in the cafeteria by the end of lunch was 15..Equation:

Answer 1

Answer

The equation described is

(3n/5) + 8 = 15

Explanation

Let the number of people in the cafeteria be n

- Each person had 1 friend come sit with them and this tripled the amount.

Number of people in the cafeteria = 3n

- Then, the entire group divided into 5 groups, and all but one group left and went outside, so only 1/5 of the total people were left in the cafeteria.

Number of people left in the cafeteria = (3n/5)

- 8 more people came into the cafeteria.

Number of people left in the cafeteria = (3n/5) + 8

- The total number of people in the cafeteria by the end of lunch was 15.

Number of people left in the cafeteria = (3n/5) + 8 = 15

(3n/5) + 8 = 15

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