A 50 meter chain with uniform density and a mass of 40 kilograms is hanging from the roof of a building under construction. How
2 answers:
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We have been given the steps to solve the equation as
Step 1: 2x = 18
Step 2: x = 18 − 2
Step 3: x = 16
There is an error in step 2.
We have
x is in multiplication with 2. So in order to get rid of 2 from the left hand side, we perform opposite operation of multiplication i.e. division.
So we must divide both sides by 2.
Therefore, A is the correct option.
A) She did not divide 18 by 2.
The number of students allowed to sit, N=4.
The total number of minutes, T=38 minutes.
Let x be the number of minutes for a student