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.
Hi let me help you out there
$5+$2+$2.50+$0.25= 9.75
The costumer handed in less money. the costumer still has to pay $6.75 dollars more.
she thought the total was less.
hope it helps
It is systematic because they are going every tenth person, in a random manner.
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Answer:
12 boys
Step-by-step explanation:
7 x 3 = 21
4 x 3 = 12
12 boys