http://www.channelnewsasia.com/stories/singaporelocalnews/view/1187751/1/.html
Exact figure: SMRT said the first delay happened at 7.06am…
Exact figure: SMRT said the first delay happened at 7.06am…
Approximated figure: …lasted for about 15 minutes.
We can be sure about the time the thing happened but how long the thing happened is an exception as the time measured is not accurate enough , for the seconds might vary in time due to human errors.
Perhaps the thing lasted just a little more than 14 minutes, so they rounded off to 15 minutes as 15 is a number that can be measured easily and we are able to estimate how long / short it is.
Sorry for the late post..><
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