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)
|
School → |
Q |
R |
S |
T |
||||
|
Year ↓ |
A |
P |
A |
P |
A |
P |
A |
P |
|
2014 |
320 |
240 |
400 |
340 |
420 |
273 |
250 |
225 |
|
2015 |
400 |
320 |
380 |
285 |
350 |
280 |
300 |
228 |
|
2016 |
440 |
286 |
360 |
288 |
330 |
264 |
320 |
256 |
|
2017 |
350 |
252 |
420 |
294 |
380 |
247 |
350 |
315 |
|
2018 |
375 |
320 |
450 |
405 |
400 |
344 |
375 |
300 |
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:
Answer & explanation
Correct answer: option 3
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