Solve the following:
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 $87$ . What is the lowest score?

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Solution

Let the lowest score be $x$
Given : Highest score $= 2 (l o w e s t - m a r k s) + 7$
$87 = 2 x + 7$
$\Rightarrow 80 = 2 x$
$\Rightarrow x = 40$ (Lowest marks)

Hence, this is the answer.

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Similar questions

Q. 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 87. What is the lowest score?

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(a) 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 $87$ . What is the lowest score?

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Set up an equation in the following cases:

(i) Irfan says that he has $7$ marbles more than five times the marbles Parmit has. Irfan has $37$ marbles. (Take $m$ to be the number of Parmit’s marbles.)

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(iii) 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 $87$ . (Take the lowest score to be $l$ .)

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Solve the following: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 87. What is the lowest score?

Let the lowest score be xGiven : Highest score =2(lowest−marks)+787=2x+7⇒80=2x⇒x=40 (Lowest marks)Hence, this is the answer.

Solve the following:
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 $87$ . What is the lowest score?

Let the lowest score be $x$
Given : Highest score $= 2 (l o w e s t - m a r k s) + 7$
$87 = 2 x + 7$
$\Rightarrow 80 = 2 x$
$\Rightarrow x = 40$ (Lowest marks)

Hence, this is the answer.