To help pay for his coaching classes, Rishi joined a restaurant as a part-timer. The average monthly salary of 12 workers and 3 managers in the restaurant was rs. 6000. One of the managers earned rs. 7020 monthly and was replaced by a new manager. This resulted in the average salary of the team to drop to rs 5800. How much is Rishi's new manager earning?

The options are:-

1. Rs. 5700

2. Rs. 4200

3. Rs. 6900

4. Rs. 6400

Answer is 4020, which is not mentioned in the options available.

See average decreased by 200 right ? But the total number of people are same so we can say that every person salary can be decreases by 200. So we can subtract 15*200 from total i.e 3000.

So new person salary must be 7020-3000 = 4020.

Answer is 4020, which is not in the options. If, the salary of the manager who left was ‘7200’ then, 4200 would be the answer, Option B. Kindly check the question/options once.