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3 years ago

Lin's family has completed 60% of a trip. They have traveled 30 miles. How long is the whole trip?

Mathematics

2 answers:

Kaylis [27]3 years ago

7 0

Answer:

12 miles left

Step-by-step explanation:

taking 60 away from 100 is 40 and 40% of 30 is 12

tatiyna3 years ago

3 0

This one’s easy if you know how to do the fractions of 5.

The whole trip is 50 miles because 60% of 50 is 30 miles.

3/5 = 0.6

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<h3>Explanation</h3>

Given the system of equations.

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To eliminate the y-term, we have to multiply the negative in either the first or second equation so we can get rid of the y-term. I will multiply negative in the second equation.

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Answer Check by substituting both x and y values in both equations.

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$6x - 2y = 10 \\ 6(3) - 2(4) = 10 \\ 18 - 8 = 10 \\ 10 = 10 \longrightarrow \sf{true} \: \green{ \checkmark}$

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$x - 2y = - 5 \\ 3 - 2(4) = - 5 \\ 3 - 8 = - 5 \\ - 5 = - 5 \longrightarrow \sf{true} \: \green{ \checkmark}$

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