The temperature is 86 in Santa Fe, New Mexico, and is decreasing at a rate of 3 degrees per hour. At the same time, the temperature is 56 in Minot, North Dakota, and is increasing at a rate of 2 degrees per hour. When will the temperature be the same?

Let, after x hours temperature will be the same.

Temperature variation at Mexico :

     .....1)

Temperature variation at Dakota :

      .....2)

Now,

Therefore, after 6 hours the temperature will be same in both areas.

Hence, this is the required solution.

20

step-by-step explanation:

ad = ae + ed = y + 7

similar triangles therefor

ac/ab = ad/ae

6/4 = (y + 7) / y

cross multiply

6y = 4(y + 7)

6y = 4y + 28

2y = 28

y = 14

step-by-step explanation: