3per10 daripada 60 =?
Answer (4)
The first one will flash at every 30 sec and the second one at 20 sec. The second one will go like 1- 4- 8 and then to 12. By the time the second one will reach first at 6 and then on 12. So, after every 1 minute they will flash together.
The two lighthouses will next flash together at 8:01 p.m. after their initial synchronization at 8 p.m. This is determined by finding the least common multiple of their flashing intervals, which is 60 seconds.
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Jawab: 18Penjelasan dengan langkah-langkah:[tex]\frac{3}{10} . 60 = 3 . 6 = 18[/tex]
[tex] \frac{3}{10} \times 60 \\ \\ = \frac{180}{10} = 18[/tex]
