algebra

A TRAFFIC LIGHT IS RED FOR 38 SECONDS YELLOW FOR 10 SECONDS AND GREEN FOR ONE MINUTE AND TWELVE SEONDS. IN A CONSTANTLY REPEATING CYCLE, WHAT IS THE PROBABILITY THAT AT THE MOMENT A PASSING PEDESTRIAN GLANCES AT IT, THE LIGHT WILL BE GREEN

1. 👍 0
2. 👎 0
3. 👁 183
1. Well, the light is green for a total of 72 seconds. There are 120 seconds in one complete cycle. You want to know the probability that it will be green, so you take the number of green seconds divided by the total number of seconds. 72/120= 3/5

the probability is 3/5

1. 👍 0
2. 👎 0
posted by Heather

Similar Questions

1. math

A traffic light follows the pattern green, yellow, red for 55, 5, and 20 seconds, respectively. What is the probability that the driver approaching this light will find it green or yellow?

asked by Anonymous on July 6, 2013
2. math, 5th grade

I am really stuck on how to figure this answer out, could you please help me? A stoplight flashes red for 50seconds, yellow for five seconds, and green for 65 seconds. In a 24 hour period, how long is the light red?

asked by phoebe on December 3, 2010
3. math

a stoplight flashes red for 50 seconds, yellow for 5 seconds, and green for 65 seconds. For what fraction of a 24-hour day is the stoplight yellow?

asked by henry on May 5, 2011
4. math

a red light winks every 6 seconds, a white one every 10 seconds, and a green one every 14 seconds. how often they wink together?

asked by sean on October 3, 2012
5. Math

the green light flashes every 3 seconds,the red every 5 seconds and white at 10 seconds. iF they flash at 12 noon.When will they flash together again in a minute? in an hour?

asked by Anonymous on July 8, 2013
6. physics

A cyclist is at rest at a traffic light. When the light turns green, he begins accelerating at 2.13 m/s2. How many seconds after the light turns green does he reach a cruising speed of 5.05 m/s?

asked by Kevin on August 22, 2015
7. check/bio!!!!

okay the question is as follows: Three plants are placed in 3 different terrariums in 3 different light conditions. Plant A is placed in blue light, plant B in green light, and plant C in yellow light. In which case will there be

asked by Anonymous on June 30, 2006
8. Physics

A car sits at a red light. Once the light turns in green, the driver accelerats at a rat of 3.5m/s^2. How far has the car moved after 6 seconds? I have so far d= (1/2)at^2 please check is it (1/2)(3.5m/s^2)(6 seconds) is the

asked by Tracy on January 16, 2012
9. Math

I am very confused on how to figure out the below math problem: A traffic light changes every 30 seconds. Another traffic light changes every 40 seconds. Both lights just changed. After how many minutes will both lights change at

asked by Matt on September 9, 2016
10. science

a car is stopped at a traffic light, which then turns green. The car speeds up for 85 seconds and travels a distance of 1.5 miles. what is the car's acceleration from the traffic light?

asked by Anonymous on February 22, 2011

More Similar Questions