Question

The average marks obtained by Raghav in 12 tests is 24. Zubeida has maintained an
average of 23 so far but has taken only 9 of the tests. If each test is out of 30, at least how
much must Zubeida score in any one of the remaining three tests to still have a chance to
match Raghav's performance?​

Answer 1

Answer:

21

Step-by-step explanation:

The average marks obtained by Raghav in 12 tests is 24. Zubeida has maintained an  average of 23 so far but has taken only 9 of the tests. If each test is out of 30, at least how  much must Zubeida score in any one of the remaining three tests to still have a chance to  match Raghav's performance?​

Number of Tests by raghav = 12

Average in test by Raghav = 24

Total Score by Raghav = 24 * 12 = 288

Number of Tests by Zubeida = 9

Average = 23

Total score obtained by zubeida = 23 * 9 = 207

Numbers required to meet Raghav Performance = 288 - 207 = 81

Test remaining = 3

Average Score to be obtained in All remaining test = 81/3 = 27

Zubaida can score maximum  30 + 30 = 60 in two tests

So in remaining third test she can score 81 - 60 = 21

Atleast 21 to be scored by zubeida in any one of the remaining test to still have a chance to meet raghav performance