The hours in am are from 00:00 - 12:00, the numbers after 12 for example 17, you subtract 12 and the remaining is the hours and what is left of the number for example 20 is the minutes.
I am horrible at explaining but I hope this helps... :)
a) Subtract 12 from the 17 at the beginning of 1720, leaving you with 5. This is the hour component of standard time, and will be placed on the left side of the colon (5:__). Then, put the last two digits onto the other side of the colon in standard time like so: 5:20.
b) For this one, because the first two digits don't exceed twelve, you simply have to divide the first two digits from the last two digits and put a colon between them: 02:35, or 2:35.
To answer this you could write the first rate that is given (12 plants: 1.5 hours in fraction form and make it equivalent to a second rate of x: 1 hour. X represents the number of plants in an hour.
You can use cross products to solve for x. Please see the attached picture for the steps. The answer is 8 plants.
Write an equation. T = Total money made M = miles driven 4 + 2.25m T = 7.3*2.25 + 4 + 2.25*4.8 + 4 T = 8 + 7.3*2.25 + 2.25 * 4.8 4.8 * 2.25 = 10.8 7.3 * 2.25 = 16.425 T = 16.425 + 8 + 10.8 T = 35.225 So, the total amount of money he made was $35.25.
