7th Math 4.16

Churchills, 2026--30% of the homeroom are girls and 70% of the homeroom are boys. If 10% of the girls play soccer and 50% of the boys play soccer, what percent of all Churchills play soccer?

CFS:

#1: Clearly defines a variable for the population

#2: Accurately models with a visual

#3: Accurately calculates the percent of the population

Purple Prize--Prize is 50% boys and 50% girls. In a schoolwide survey, 25% of boys chose purple as their favorite color. 10% of girls chose purple as their favorite color.

What percent of all students at Prize say purple is their favorite color?

CFS:

#1: Clearly defines a variable for the population

#2: Accurately models with a visual

#3: Accurately calculates the percent of the population

Diagram optional for this question.

Caffeine--90% of all teachers at Prize drink coffee or tea in the morning. The rest only drink water. Of the teachers who drink coffee or tea in the morning, 30% go to Starbucks instead of making their own beverage at home.

What percent of all teachers go to Starbucks in the morning?

CFS:

#1: Clearly defines a variable for the population

#2: Accurately models with a visual

#3: Accurately calculates the percent of the population

Diagram optional for this question

Life of Pets--On Angel's block, 65% of his neighbors do not have any pets and 35% of his neighbors own at least one pet.

Of the neighbors who own at least one pet, 50% have two or more pets in their house.

What percent of neighbors on his block own two or more pets?

CFS:

#1: Clearly defines a variable for the population

#2: Accurately calculates the percent of the population

SPICY--Try if you have time (optional)

Sheltered--In a shelter that is occupied by 55% dogs and 45% cats, 60% of the animals are brought in by concerned people who found these animals in the streets.

If 90% of the dogs are brought in by concerned people, what is the percent of cats that are brought in by concerned people?

CFS:

#1: Clearly defines a variable for the population

#2: Accurately calculates the percent of the population

Data--Ms. Lugo collected data on Prize's reteaching program. Out of all the students in reteaching, 45% are girls and 55% are boys.

24% of the girls are in math reteaching, while 40% of the boys are in math reteaching.

What percent of all students in reteaching are there for math help?

CFS:

#1: Clearly defines a variable for the population

#2: Accurately models with a visual

#3: Accurately calculates the percent of the population