There are 40 students in Joan's class. She plans to invite them to her birthday party. She asked them to suggest a theme for her party. Three of every eight students suggested a rainbow-themed party. How many students suggested a rainbow themed party? How many did not? Finish the sentance: () students suggested a rainbow themed party, while () students did not.

Answer 1

To find out how many students suggested a rainbow-themed party, we first need to determine how many students belong to "three of every eight."

We can set up a proportion: 3/8 = x/40

To solve for x, we cross-multiply: 8x = 3 * 40

This simplifies to: 8x = 120

Dividing both sides by 8, we find: x = 15

Therefore, 15 students suggested a rainbow-themed party.

To determine how many students did not suggest a rainbow-themed party, we subtract the number of students who did from the total number present: 40 - 15 = 25

So, 15 students suggested a rainbow-themed party, while 25 students did not.

Answer 2

At a school cafeteria, a staff person surveyed the food preferences of 35 students. for every five students, two said they liked healthy foods. How many students preferred healthy foods?

Answer 3

To find out how many students preferred healthy foods, we first need to determine how many students belong to the group where "for every five students, two said they liked healthy foods."

We can set up a proportion: 2/5 = x/35

To solve for x, we cross-multiply: 5x = 2 * 35

This simplifies to: 5x = 70

Dividing both sides by 5, we find: x = 14

Therefore, 14 students preferred healthy foods.