What is the average of students in Play from all the classes ?

Options

A. a) `97(1)/(2)`
B. b) `134(1)/(2)`
C. c) `122(1)/(2)`
D. d) `135(1)/(2)`

Answer

A

Explanation

Required average
`=((8)/(100)xx1500+(6)/(100)xx1400+(10)/(100)xx1360+(12)/(100)xx1250)/(4)`
`rArr (120+84+136+150)/(4)=(490)/(4)=122(1)/(2)`