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- Solving mathematical problems by using column equations (grade one)
Solving mathematical problems by using column equations (grade one)
If the uphill journey is 2x, the flat journey is 3x, and the downhill journey is 4x.
2x/ 10+3x/ 15+4x/20 = 4
x=20/3
T = 4 * x/10+3 * x/15+2 * x/20 =14/3 hours.
I hope it helps you.
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