Explanation:
To determine how long it will take to finish 400 TVs at a rate of 60 TVs produced in 7 days, you can set up a proportion:
(60 TVs / 7 days) = (400 TVs / x days)
Now, solve for x:
60/7 = 400/x
Cross-multiply:
60x = 7 * 400
60x = 2800
Now, divide by 60 to solve for x:
x = 2800 / 60
x = 46.67 days (rounded to two decimal places)
So, it will take approximately 46.67 days to finish 400 TVs at the given production rate.