Answered

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13. On weekends, as part of his exercise routine, Carl goes for a run, partly
C on paved trails and partly across rough terrain. He runs at 10 km/h on
the trails, but his speed is reduced to 5 km/h on the rough terrain. One
day, he ran 12 km in 1.5 h. How far did he run on the rough terrain?

Sagot :

justinesaber123

Answer:

5*a+10*b=12,

a+b=1.5

Step-by-step explanation:

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