Ask Question
18 December, 02:25

8:54 a. m.

9:12 a. m.

9:24 a. m.

10:24 a. m.

11:18 a. m.

Light A flashes every 12 minutes, and light B

flashes every 18 minutes. The two lights flash

at the same time at 8:00 a. m. At how many of

the times listed above will they again both

flash at the same time?

F. 1

G. 2

H. 3

J. 4

K. 5

+5
Answers (1)
  1. 18 December, 04:05
    0
    Hello,

    The two lights flash at the same time every 18 min

    at 8:00 h=480 min = 480+0*36

    at 8:36 h=516 min = 480+1*36

    ...

    54 is not divisible by 36

    60+12=72 = 2*36 yes

    60+24=84 not

    120+24=4*36 yes

    180+18=198 not

    So 2 times are correct 9:12 and 10:24

    Answer G
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “8:54 a. m. 9:12 a. m. 9:24 a. m. 10:24 a. m. 11:18 a. m. Light A flashes every 12 minutes, and light B flashes every 18 minutes. The two ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers