A student saves Rs 50 in the first month and increases the saving by Rs 20 every…

MATHEMATICS · Single correct · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

A student saves Rs 50 in the first month and increases the saving by Rs 20 every month thereafter. What is the least number of months required for the total savings to reach at least Rs 3000? (a) 14 (b) 17 (c) 15 (d) 16

Related theory

Applications of APs
Arithmetic Progressions
Functions
Sequences and series
Algebra
Sum of first n terms of an AP

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