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LoginA man saved ₹660000 in 20 years. In each succeeding year after the first yea he saves ₹ 2000 more than he saved in the previous year. How much did he save in the first year?
General Awareness ARITHMETIC-PROGRESSION IN GENERAL AWARENESS . 2 years ago
+10 pts
Using the formula ` S_(n) = n/2 xx [ 2a +(n-1) xx 2000]`
` Rightarrow 10xx [ 2a + 19 xx 2000] = 660000`
` Rightarrow 20a + 380000 = 660000 rRightarrow 20a = 280000 Rightarrow a= 14000`
Hence, the man saved ₹ 14000 in the first year.
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