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Question
When Ajit travelled 15 km, he found that one-fourth of his journey was still left. What was the full length of the journey?
Solution
Let the total length of journey = x
Journey travelled = 15 km
Journey still left = `1/4` of x
Now, according to question,
`"x"-15=1/4` of x
x − 15 = `"x"/4`
`"x"-"x"/4` = 15
`(4"x"-"x")/4=15`
3x = 15 × 4
x = `(15xx4)/3`
= 20 km
∴ Total length of the journey = 20 km.
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