Subject: General Aptitude · Chapter: Average · Exam: 2006 · Marks: · Difficulty:
The average monthly expenditure of a family was ₹ 2200 during the first 3 months; ₹ 2250 during the next 4 months and ₹ 3120 during the last 5 months of a year. If the total savings during the year were ₹ 1260, find the average monthly income of the family. (M.A.T., 2006)
Answer
Answer (as printed):
Explanation
Total yearly expenditure $=₹(2200 \times 3+2250 \times 4+3120 \times 5)$ $$=₹(6600+9000+15600)=₹ 31200 .$$ Total yearly savings $=₹ 1260$. Total yearly income $=₹(31200+1260)=₹ 32460$. $$\text { ∴ Average monthly income }=₹\left(\frac{32460}{12}\right)=₹ 2705 .$$
Explanation as extracted from the printed page; notation may be imperfect.