AC Lim's answer to Izz zuhairi's Primary 6 Maths Data Analysis Singapore question.

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AC Lim
Ac Lim's answer
12405 answers (A Helpful Person)
1st
Both bulb will light up together at every 24 mins
Common multiple of 8 and 6
Last light up together at 2036 hr.
The next light up together is
= 2036+24mins
= 2100 hr