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chubhunter [2.5K]
3 years ago
13

Suppose you receive an allowance of $107 and your friend receives an allowance of $83 at the beginning of the month. If you spen

d $8 a day and your friend spends $4 a day, after how many days will you and your friend have the same amount of money?
Mathematics
1 answer:
shusha [124]3 years ago
3 0
6 days
Y= 107-8x
Y=83-4x
You can use substitution
83-4X= 107-8x
Bring 8X
Over to the left
83+ 4x=107

Subtract 83
4x= 24
X=6
Or put in calculator and go 2nd graph you see table and on 6 day they both have $59
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Step-by-step explanation:

Hey there!

<u />

<u>You can use the distance formula (d = rt) to solve this problem.  </u>

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R + C is their rowing speed (R) plus the rate of the current (C).  

Upstream trip: d = 55 miles, t = 11 hours, and r = R - C

R - C is their rowing speed (R) minus the rate of the current (C).  

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R + C = 11 Subtract C from both sides.

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