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30. Subba Rao started work in 1995 at an annual salary of Rs. 5000 and received an increment ofRs. 200 each year. In which year his income reaches Rs. 7000?eteen in the |
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Answer» Yearly income of Subba Rao is following : 5000, 5200, 5400, 5600............... Here, a = 5000, d = 200, Tn= 7000We know that, Tn= a + (n – 1) d⇒7000 = 5000 + (n – 1) 200⇒7000 = 5000 + 200n – 200⇒7000 = 4800 + 200n⇒200n = 2200⇒n = 11 Hence, in the 11th year, his income reached by Rs. 7000. |
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