Question

Rahul's average marks in 5 subjects in an examination were 75. He scored 72 inEnglish. 64 in Bengali, 81 in Maths, 73 in History. How much did he score in
science?​
please step by step​

Answer 1

Let x be Rahul's mark in science

average= sum of all observation/no. of observation

75= (72+64+81+73+x)/5

75×5= 290+x

x= 375-290

= 85

Rahul scored 85 in science.

Answer 2

Answer:

85 marks

Step-by-step explanation:

72 in English.

64 in Bengali,

81 in Maths,

73 in History,

? in Science

$75 = \frac{(72 + 64 + 81 + 73 + x)}{5} \\ 75 \times 5 = 290 + x \\ 375 - 290 = x \\ x = 85$