Practice30Create account

In a scholarship test, Reasoning carries weight 3, Maths weight 4 and English weight 3. Kunal scored 68 in Reasoning and 74 in English. What must he score in Maths for a weighted mean of 75?

Competition practiceStatistics
  • A83
  • B75
  • C78
  • D81

Step-by-Step Solution

Required total . Known part . So . (83 uses an unweighted mean: )
Answer: D) 81

Master this topic in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Statistics practice questions

More Statistics practice

The data 2, 4, 4, 5, 7, 7, 7, 9, x has a mean of 6 and its mode is 7. What is x?Six boxes in a godown have a mean weight of 48 kg. One box is swapped for a new box…A clerk found the mean of 30 test scores to be 62. Later it came out that one score of…Twenty-one different observations have a median of 34. Every observation larger than the…Ravi's mean score over his first 6 unit tests was 72. After the 7th and 8th tests his…