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The sum of thrice the amount Ravi’s brother gave Ravi and four times the amount Ravi’s sister gave Ravi is 900. Write a linear equation in two variables to represent this statement (Take amount given by Ravi’s brother = X and amount given by Ravi’s sister=Y) *3x – 4y = 9005x + 4y = 9003x + 4y = 9004x + 3y = 900 |
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Answer» When RAVI's brother was born let Ravi's Father's age = X years Mother's age = y years Then, sister's age = x−28 years So, x−28=4 x=32 years Ravi's age = y−26 years Age of Ravi's brother = y−26+3=y−23 years When Ravi's brother was born, his age = 0 THUS, y−23=0 y=23 years Hence, Father = 32 years and Mother = 23 years |
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