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Question
If a number is thrice the other and their sum is 68, find the numbers.
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Solution
Let the two numbers be x and y respectively.
Then, we have
x = 3y ....(i)
And,
x + y = 68
⇒ 3y + y = 68
⇒ 4y = 68
⇒ y = 17
⇒ x = 3 x 17
= 51
Thus, the two numbersare 51 and 17 respectively.
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