Two street lights change every 30 seconds and 50 seconds respectively. They last change together at 10:40 am. When will they change together again? so umm I need help on this question haha

The time when they change again = 432seconds

If they flash at 30 and 50 seconds, then a diagram showing their timing helps

30, 60, 90, 120,150

50,100,150

Step-by-step explanation:

So after 150 seconds, both lighthouses flash at the same time

150 sec = 2.5 minutes

10:42 is the answer

i think 5 miles per hour

step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have