Mathematics: Selma s class is making care packages to give to victims of a natural disaster. selma packs one box in 5 minutes and has already packed 12 boxes. her friend trudy packs one box in 7 minutes and has already packed 18 boxes. how many more minutes does each need to work in order to have packed the same number of boxes?

Selma s class is making care packages to give to

3kp

01.06.2020

Selma Trudy

12 + x/5 = 18 + x/7 (x = amount of time, in minutes)

x/5 - x/7 = 18 - 12

7x/35-5x/35=6

35*6/2=105 minutes

%282x%29%2F35%29%29 = 6 > x = %2835%2A6%29%2F2 = 105 minutes.

Answer. 105 minutes, or 1 hour and 45 minutes.

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davisearron

01.06.2020

66 more min. he used which could be 1 hour and 6 min.

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hardyfombu

04.05.2020

Step-by-step explanation:

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