Question

Ms. Nelson has a total of 150 students in her classes. of these students, 30% eat during the first lunch period, 20% eat during the second lunch period, and the rest eat during the third lunch period. How many of her students eat during each lunch period

Answer 1

Answer: 1st lunch period = 45 students

2nd lunch period = 30 students

3rd lunch period = 75 students

Step by step solution:

From the information given,

Total students = 150

• 30% eat during the 1st lunch period, re-write the percent as a decimal 30/100 = 0.3

30% of 150 is:

$150\times0.3=45$

45 students eat during the 1st lunch period.

• 20% eat during the 2nd lunch period, re-write the percent as a decimal 20/100 = 0.2

20% of 150 is:

$150\times0.2=30$

30 students eat during the 2nd lunch period.

The remaining percentage of students eat during the 3rd lunch period.

100% - 30% - 20% = 50%

Re-write 50% as a decimal 50/100 = 0.5

50% of 150 is:

$150\times0.5=75$

75 students eat during the 3rd lunch period.