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4 years ago

6

Please help with this question!

1 answer:

katrin2010 [14]4 years ago

5 0

Let the calories / hour for hiking = h
Let the calories / hour for canoeing = c
3h + 4 c = 2338
7h + c = 3322 Multiply this by 4

28h + 4c = 13288 Write the first equation underneath this one.
3h + 4c = 2338 Subtract
==================
25h = 10950 Divide by 25
h = 10950 / 25
h = 438 calories for each hour hiking.

7h + c = 3322
7*438 + c = 3322
3066 + c = 3322
c = 3322 - 3066
c = 256 calories / hour canoeing.

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