Study the following table and answer the question:

Number of students Appeared (A) and Passed (P) in an annual examination from four schools Q, R, S & T in five years (2014 to 2018)

The difference between the average number of students passed from school R in 2015 to 2017 and the number of students passed from school Q in 2015 is x. The value of x lies between:

30 and 35

Average number of students passed from school R in 2015 to 2017

=  \(\frac{285 +  288 + 294 }{3}\)

=  \(\frac{867}{3}\)

 = 289

Number of students passed from Q in 2015 = 320

x = 320 - 289 = 37

Ans:- 30 and 35