In an entrance examination, Ritu scored 56 percent marks, Smita scored 92 percent marks and Rina sco

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In an entrance examination, Ritu scored $56$ percent marks, Smita scored $92$ percent marks and Rina scored $634$ marks. The maximum marks of the examination is $875 .$ What is the average marks scored by all the three girls together ?

A

$1929$

B

$815$

C

$690$

D

$643$

Solution

Ritu's marks $=875 \times \frac{56}{100}=490$

Smita's Marks $=875 \times \frac{92}{100}=805$

Rina's marks $=634$

Total marks $=490+805+634=1929$

Average $=\frac{1929}{3}=643$

Standard 13

Quantitative Aptitude

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