In a P.7 class, 20% of the boys were absent for the Mock Examinations, of the remainder of the boys were present Find the fracti
1 answer:
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As we have to solve for b, it means we have to isolate b
So first of all subtract from both sides
So we get
Now we need b , but its b^2 , so we can take square root on both sides.
taking square roots on both sides
Hence option B is correct