A manufacturer of radio sets produced 600 units in the third year and 700 units in the seventh year. Assuming that the product increases uniformly by a fixed number every year, find i. the production in the first year ii. the total product in 7 years and iii. the product in the 10th year.

Explanation

To solve the problem step by step, we will use the properties of Arithmetic Progressions (AP).

### Given Information:
- Production in the 3rd year (A3) = 600 units
- Production in the 7th year (A7) = 700 units
- The production increases uniformly by a fixed number (d) each year.

### Step 1: Establish the general formula for the nth term of an AP.
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