Kelly realizes once she gets to Round Rock that she left her Art project (a major grade) at her mother's house in Plano. She would not have time to have it shipped before it is due the next day and convinces her brother to meet her part of the way. If the average speed limit from Plano to their meeting point (on the North side of West, TX) is 65 miles per hour, and the average speed limit from Round Rock to their meeting point is 75 miles per hour, how many miles will Kelly's brother have to drive before he reaches Kelly if the driving distance between them is 196 miles and they drive the same amount of time? I saw this has been answered already but the one answer didn’t have a detailed answer

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.

i can't solve unless i know what the line is

step-by-step explanation:

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