Mathematics

Mathematics

Problem

Priya saves Rs 150 in the first month and increases her saving by Rs 20 every month thereafter. In which month will her monthly saving first reach at least Rs 500? a) 20th month20^{\text{th}}\text{ month} b) 19th month19^{\text{th}}\text{ month} c) 18th month18^{\text{th}}\text{ month} d) 17th month17^{\text{th}}\text{ month}

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