Question 3(iii)
Solve the following:
Maya, Madhura and Mohsina are friends studying in the same class. In a class test in geography, Maya got 16 out of 25. Madhura got 20. Their average score was 19. How much did Mohsina score?

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Solution

Let Moshina's score be x, then
according to the question, the equation is
$\Rightarrow \frac{16 + 20 + x}{3} = 19$
$\Rightarrow 36 + x = 19 \times 3$
$\Rightarrow 36 + x = 57$
$\Rightarrow x = 57 - 36$
$∴$ Mohsina's score is 21.

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Question 3(iii) Solve the following: Maya, Madhura and Mohsina are friends studying in the same class. In a class test in geography, Maya got 16 out of 25. Madhura got 20. Their average score was 19. How much did Mohsina score?

Let Moshina's score be x, then according to the question, the equation is ⇒16+20+x3=19 ⇒36+x=19×3 ⇒36+x=57 ⇒x=57−36 ∴ Mohsina's score is 21.

Question 3(iii)
Solve the following:
Maya, Madhura and Mohsina are friends studying in the same class. In a class test in geography, Maya got 16 out of 25. Madhura got 20. Their average score was 19. How much did Mohsina score?

Let Moshina's score be x, then
according to the question, the equation is
$\Rightarrow \frac{16 + 20 + x}{3} = 19$
$\Rightarrow 36 + x = 19 \times 3$
$\Rightarrow 36 + x = 57$
$\Rightarrow x = 57 - 36$
$∴$ Mohsina's score is 21.