3/7 of the students in a school are in sixth grade. a) How many sixth graders are there if the school has 70 students? 7 b) How many sixth graders are there if the school has 28 students?​

Answer:

a) 30 sixth-graders

b) 12 sixth-graders

Step-by-step explanation:

You can solve this problem by multiplying fractions. In order to solve a, you need to multiply 3/7 by 70 students to e t the number of sixth-graders because 3/7 of the population (in this case it's 70) are 6th graders:

70 × 3 ÷ 7 = 70 ÷ 7 × 3 = 30

So if the school has 70 students, 30 are 6th graders.

For part b, you multiply the student population (28) by the ratio 3/7 to find how many 6th grader there are:

28 × 3 ÷ 7 = 28 ÷ 7 × 3 = 12

So if the school has 28 students, 12 are 6th graders.

a) There are 30 sixth graders are there if the school has 70 students.

b) There are 12 sixth graders are there if the school has 28 students.

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Given that;

3/7 of the students in a school are in sixth grade.

Now,

a) Let the students in school = 70

Then, Number of students in sixth grade = 3/7 × 70

                                                               = 3 × 10

                                                               = 30

b) And, Let the students in school = 28

Then, Number of students in sixth grade = 3/7 × 28

                                                               = 3 × 4

                                                               = 12

Thus, a) There are 30 sixth graders are there if the school has 70 students.

b) There are 12 sixth graders are there if the school has 28 students.

Learn more about the multiplication visit:

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