The teacher tells the class that the highest marks obtained by a student in her class is twice the lowest marks plus 7. The highest. score is 97. What is the lowest marks?
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Answered by
1
Answer:
Lowestscore=40
Step-by-step explanation:
Let\: Lowest \:score \: in \:the \:class = xLetLowestscoreintheclass=x
Heighest \:score = 87Heighestscore=87
\implies Twice \:the \: Lowest \: score +7=87⟹TwicetheLowestscore+7=87
\implies 2x+7=87⟹2x+7=87
\implies 2x=87-7⟹2x=87−7
\implies 2x=80⟹2x=80
\implies x = \frac{80}{2}⟹x=
2
80
\implies x = 40⟹x=40
Therefore,.
Lowest \:score =x=40Lowestscore=x=40
Step-by-step explanation:
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Answered by
1
Step-by-step explanation:
let lowest marks be x
A.T.Q.
2x + 7 = 97
2x = 97 - 7
2x = 90
x = 90/2
x = 45
So, the lowest Marks are 45
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