Multiple choice

The average score obtained by Subir in 15 tests is 29. Ruchira has so far scored an average of 27, but has given only 11 tests so far. How much does Ruchira score on average in the remaining four tests to match Subir's performance?

  1. 36

  2. 35.5

  3. 35

  4. 34.5

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Subir's total = 15 × 29 = 435. Ruchira needs same total in 15 tests. Current total = 11 × 27 = 297. Needs 435 - 297 = 138 in remaining 4 tests. Average = 138/4 = 34.5.