Answer:
47
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Answer:
1)
2)
Step-by-step explanation:
Given that
1) Given that
To find
Expanding the sums below to solve it
(adding the terms )
Therefore
2) Given that
To find
Expanding the sums below to solve it
(adding the terms )
Therefore ![\sum\limits_{i=1}^{4}x_{i}=87](https://tex.z-dn.net/?f=%5Csum%5Climits_%7Bi%3D1%7D%5E%7B4%7Dx_%7Bi%7D%3D87)
<span>88.3 : 100 = 86.7 : x
x = 98.18
100-98.18=1.81 (rounded 1.8)
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(88.3-1.8%=86.7)</span>