Question

There are 49 members in group A, 35 members in group B and 31 members in group C. All the members of these groups went to a restaurant. The average amount spent on each member of group A, B and C is ₹106, ₹141 and ₹226, respectively. The total average amount (in ₹) spent per member is:

• A. 146
• B. 145
• C. 154
• D. 149

Answer 1

Answer:

D. 149

We need the overall average spending per member.

Total members

49 + 35 + 31 = 115

Total expenditure

• Group A: $(49 \times 106 = 5194)$

• Group B: $(35 \times 141 = 4935)$

• Group C: $(31 \times 226 = 7006)$

  Total amount spent

  $5194 + 4935 + 7006 = 17135$

  Average per member

$\frac{17135}{115} = 149$

Final Answer: ₹149