The answer to this questions is 70kg.
Answer:
B is the answer
Step-by-step explanation:
Answer:
y = 21
Step-by-step explanation:
x = 5
y = 5 (5) - 4
y = 25 - 4
y = 21
(5 , 21)
Hope this helps!
The guess-and-test strategy may be made easier by using the choices.
A. 38 sixth graders ----> 57 - 38 = 19 . There are 19 seventh graders. This option already satisfy the condition that the number of sixth graders should be twice that of the seventh graders. There is no need to test for the remaining choices. The answer is letter A.