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DochEvi [55]
3 years ago
5

When sales representatives for a pharmaceutical company drive out of town meetings that require an overnight stay, they receive

$175 for lodging plus $0.70 per mile driven. How many miles did Joe drive if his company reimbursed him $329 for an overnight trip?
Set up an equation that can be used to solve the problem. Solve the equation and determine the desired value.
Mathematics
2 answers:
blsea [12.9K]3 years ago
6 0
X=number of miles

$329=$175+$0.70x
329-175=.70x
154=.70x
154/.70=x
220miles =x
Stells [14]3 years ago
4 0
He drove 220 miles because 329-175 is a number then that divided by.7 is 220

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Step-by-step explanation:

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Since 5 g/L of salt is pumped in at a rate of 4 L/min, the mass flow in is thus 5 g/L × 4 L/min = 20 g/min.

Let Q(t) be the mass present at any time, t. The concentration at any time ,t is thus Q(t)/volume = Q(t)/10. Since water drains at a rate of 4 L/min, the mass flow out is thus, Q(t)/10 g/L × 4 L/min = 2Q(t)/5 g/min.

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