Gujarati
Hindi
4.Average
easy

The average marks of a group of $20$ students on a test is reduced by $4$ when the topper who scored $90$ marks is replaced of a new students. Find the marks of the new student.

A

$10$

B

$51$

C

$56$

D

$86$

Solution

Let the marks of New student $= x$

$x=90-20 \times 4 \Rightarrow x=80$

Marks of New student $= 10$

Standard 13
Quantitative Aptitude

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