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The earnings of a hawker for three days were 175, 5200, 5225 respectively.7th day(i) If the earnings of the hawker follows the same pattern, then his earning onwill be(a) 305(b) 3330(c) 325(d) 360(ii) On which day the hawker will earn 450?(a) 8th day(b) 12th day (c) 11th day(d) 15th day |
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Answer» GIVEN : The earnings of a hawker for three days were 175, 200, 225 respectively. the earnings of the hawker follows the same pattern, To FIND : his earning on 7TH day (a) 305 (b) 330 (c) 325 (d) 360 (ii) On which day the hawker will earn 450? (a) 8th day (b) 12th day (c) 11th day (d) 15th day Solution : 175, 200, 225 a = 175 d = 25 earning on 7th day = 175 + (7 - 1)25 = 175 + 6(25) = 175 + 150 = 325 earning on 7th day = 325 hawker will earn 450 => 450 = 175 + (n - 1)25 => 18 = 7 + (n - 1) => 11 = n - 1 => n = 12 12th day the hawker will earn 450 Learn More: which of the following can be NTH TERM of an ap 4/n+2, 4n+5, 2n^2+3 ... the seventeenth term of an ap is 5 morethan twice its eighteenth ... if mth term of an A.P.is n and nth term is m, show that (m+n)th term ... |
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