ConceptSum of First n Terms of an AP

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#### Question

Ramkali required Rs 2,500 after 12 weeks to send her daughter to school. She saved Rs 100 in the first week and increased her weekly saving by Rs 20 every week. Find whether she will be able to send her daughter to school after 12 weeks.

What value is generated in the above situation?

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#### Similar questions VIEW ALL

The first and the last terms of an AP are 5 and 45 respectively. If the sum of all its terms is 400, find its common difference.

In an AP

Given a = 3, n = 8, S = 192, find d.

If the ratio of the sum of first n terms of two A.P’s is (7n +1): (4n + 27), find the ratio of their mth terms.

Find four numbers in A.P. whose sum is 20 and the sum of whose squares is 120

In an AP:

Given l = 28, S = 144, and there are total 9 terms. Find a.

#### Reference Material

Solution for concept: Sum of First n Terms of an AP. For the course 8th-10th CBSE