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Priya earned Rs 15,000 in the first month. Thereafter her salary increases by Rs 1500 per year. Her expenses are Rs 13,000 during the first year and the expenses increases by Rs 900 per year. How long will it take her to save Rs 20,000 per month. |
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Answer» Tabulate the given table
Monthly savings form an A.P. 2000, 2600, 3200 … a = 2000; d = 2600 – 2000 = 600 Given tn = 20,000 tn = a + (n – 1) d 20000 = 2000 + (n – 1) 600 20000 = 2000 + 600n – 600 = 1400 + 600n 20000 – 1400 = 600n 18600 = 600n n = 18600/600 = 31 He will take 31 years to save Rs 20,000 per month. |
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