Question

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 are 875. What is the average marks scored by all the three girls together ?

Answer 1

Marks scored by Ritu= 56/100×875
=490
Marks scored by Smita=92/100×875
=805
Marks scored by Rina =634
Average=(490+805+634)÷3
=643

Answer 2

Answer:  The answer is 643 marks.

Step-by-step explanation:  Given that in an entrance examination,

marks scored by Ritu is given by

$M_r=56\%\times 875=\dfrac{56}{100}\times 875=490,$

marks scored by Smita is

$M_s=92\%\times 875=\dfrac{92}{100}\times 875=805,$

and marks scored by Rina = 634.

Therefore, average marks scored by three of them is

$A=\dfrac{490+805+634}{3}=643.$

Thus, the answer is 643 marks.