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This should be a basic system of equations problem

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12x + 4y = 152

32x + 12y =420

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First solve 12x + 4y = 152 for x

Add -4y to each side

12x+4y**+-****4y**=

152**+-****4****y**

12x=-

4y+152

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Divide each side by 12

12x ÷ 12 =

x = -1/3y + 38/3

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Substitute -1/3y + 38/3 for x in 32x+12y=

420

32(-1/3y + 38/3)+12y=420

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Simplify each side

4/3y + 1216/3 = 420

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Add -1216/3 on each side

4/3y + 1216/3

**+ -1216/3** = 420

**+ -1216/3**

4/3y = 44/3

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Divide each side by 4/3

4/3y ÷ 4/3 = 44/3 ÷ 4/3

**y = 11**

y = 11 is your answer
Put the 4 on top to get your answer to come out equally

Answer :

70mins(T) x 65(d) divided by half

You have 85miles left so 1hour and 30mins