1.

The average salary of 6 persons is Rs300. The average of first 4 persons is Rs250 and average of last3 is Rs350. What is the salary of 3rd person?​

Answer»

Answer:

Step-by-step explanation:

Total NUMBER of WORKERS is considered as X

Average of 12 officers SALARY = 12 x 400 = 4800

4800 + 56x = ( 12 + x ) x 60

4800 + 56x = 720 + 60x

4x = 4080

X = 1020

∴ Total number of workers = 12 + x = 12 + 1020 = 1032



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