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GRE Online Coaching | GRE Averages Practice Question #2 | Average for Subsets & Overlapping sets | 2 Questions

In both these questions, we have average for the entire set and averages for subsets within these sets. Using the information given, we have to compute the value of one of the observations in the set.

Question 1: Easy Variant
The average expenses of a start up during a year was $55,000 a month. During the first 5 months, the company spent an average of $75,000 per month and during the last 6 months the company spent an average of $45,000 per month. how much did the company spend in the 6th month?

Question 2: Hard Variant
The average rainfall on the first 6 days of a month was 50 mm. The average for the first 4 days was 48 mm and that for the last 4 of these 6 days was 54 mm. If the rainfall on the 4th day was 8 mm more than that on the 3rd day, what was the rainfall on day 3?

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