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snow_lady [41]
4 years ago
12

Please help me. I really need help

Mathematics
2 answers:
Flauer [41]4 years ago
6 0
A. 38

Let X = seventh graders

6th graders are twice the number of 7th graders; therefore, 6th graders will be 2X.
The total number of students is 57.

2X + X = 57
3X       = 57
X         = 57 / 3
X         = 19

IF X represents the 7th graders; there are 19 seventh graders present.
Since 6th graders are represented by 2X; Then, 2 * 19 = 38 is the number of 6th graders present.

Add both numbers to check: 19 + 38 = 57.
Elodia [21]4 years ago
3 0
Try 38. First divide 38 by 2, which equals 19. Then add 19 to 38 which will equal to 57. Hope this helps.
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