Respuesta :
If A=Aiden’s weight and J=Jacob’s weight, so A=J-39 or J=A+39.
J>100 so A+39>100, and A>61 pounds.
A+J>>61+100, A+J>>161. Or, A+J=2J-39=2A+39>161.
If A=62, J=101, so A+J=163 pounds.
Therefore we can say their combined weights will 161 pounds, and 163 pounds would be a typical weight.
J>100 so A+39>100, and A>61 pounds.
A+J>>61+100, A+J>>161. Or, A+J=2J-39=2A+39>161.
If A=62, J=101, so A+J=163 pounds.
Therefore we can say their combined weights will 161 pounds, and 163 pounds would be a typical weight.
Answer:
Let x represents the weight of Aiden in pounds,
∵ Aiden weighs 39 pounds less than his older brother, Jacob.
So, weight of jacob = x + 39,
According to the question,
Jacob's weight is more than 100 pounds. ( i.e. 101, 102 or etc.. )
x + 39 > 100 ----(1)
x > 100 - 39
x > 61 ----(2)
Hence, Aiden weighs more than 61 pounds. ( i.e. 62, 63 or etc.. )
Adding equation (1) and (2),
x + 39 + x > 161
Jacob's weight + Aiden's weights > 161
Therefore, the combined weight of two brother is more than 161 pounds i.e. 162, 163 or etc...
