I got a problem wrong and I don't know why. Here it is: A highway construction warning sign blinks on and off. In all, the sign is on for 0.88 of each minute. For how many seconds is the sign on in 5 minutes? I multiplied 0.88 x 5 and got 4.40 but it was marked wrong. What did I do wrong?
0.88 * 60 = 52.8 seconds
52.8 * 5 = 264 seconds
To find the solution to this problem, you need to calculate the number of seconds the sign is on in 5 minutes.
You correctly determined that the sign is on for 0.88 of each minute. However, you made an error in multiplying 0.88 by 5.
To find the number of seconds the sign is on in 5 minutes, you need to multiply the number of seconds in a minute (60 seconds) by 0.88, and then multiply that result by 5.
Let's go through the calculation step by step:
1. Find the number of seconds the sign is on in one minute:
- Number of seconds in a minute = 60 seconds
- Multiply 60 seconds by 0.88 to find the number of seconds the sign is on in one minute: 60 * 0.88 = 52.8 seconds (rounded to the nearest whole number)
2. Multiply the number of seconds the sign is on in one minute by 5 (for 5 minutes):
- 52.8 seconds * 5 = 264 seconds
Therefore, the correct answer is that the sign is on for 264 seconds in 5 minutes, not 4.40 seconds as you calculated.