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construct word problem on simultaneous linear equations in two variables, so that the value of one variables will be 10 ( on only age) also solve it |
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Answer» Example:The sum of present ages of Madhu and RAJU is 11years.Madhu is ELDER than Raju by 9 years.Find their present ages. Solution:LET the present AGE of Madhu be x years and the age of Raju be y years. ∴x+y=11 .....(1) x−y=9 .......(2) ADDING (1) and (2) we get 2x=20 ∴x=220=10 And x+y=11 ∴10+y=11 ∴y=11−10=1 ∴ Present age of Madhu is 10years and of Raju is 1 year. |
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