Question
Walking at $3/4$ of his usual speed, a man reaches his office 20 minutes late. Then his usual time for walking to his office is :
Answer: Option D
Answer: (d)
Usual time = x minutes
New time = ${4x}/3$ minutes
$(Since, \text"Speed ∞ "\text"1"/\text"Time")$
According to the question,
${4x}/3 - x = 20$
$x/3 = 20$
x = 60 minutes i.e. 1 hour.
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Answer: (d)
Usual time = x minutes
New time = ${4x}/3$ minutes
$(Since, \text"Speed ∞ "\text"1"/\text"Time")$
According to the question,
${4x}/3 - x = 20$
$x/3 = 20$
x = 60 minutes i.e. 1 hour.
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