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Sagot :
Answer: 400
Step-by-step explanation:
Step 1: Express the given conditions mathematically:
The passing marks required = 40% of x = 0.40x
The marks scored by the student = 172
The marks scored by the student = Passing marks required + 12
Step 2: Form equations based on the above conditions:
0.40x = Passing marks required
172 = Passing marks required + 12
Step 3: Solve the equations:
0.40x = Passing marks required
0.40x = 172 - 12
0.40x = 160
Step 4: Find the total marks in the examination:
x = [tex]\frac{160}{0.40}[/tex]
x = 400
Therefore, the total marks in the examination are 400.
Answer:
If 40%is 172 -12 = 160
therefore 100% = 160/40 ×100
which will give us 400
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