20. The middle school track team consists of 7th and 8th graders. There are 79 seventh graders

which is 47% of the team. How many 8th graders are on the team?

89

79

82

16

Option A (89)

Step-by-step explanation:

Number of 7th graders:

Let x represent the total number of the team.

The expression will then be:

47% of x = 79

47 / 100 * x = 79

47x / 100 = 79

Cross Multiply.

47x = 79 * 100

x = 7900/47

x = 168.08

x = 168 (approximately)

Therefore, it means we have a total of 168 team members.

Numbers of 8th graders:

Total number of team members minus number of 7th graders

8th graders = 168 - 79

8th graders = 89

There are 89 8th graders on the team

I believe that the answer is 89