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babymother [125]
3 years ago
9

Two friends, Darren and Michael, together earn $30 more than twice what Brian earns per month. If Darren and Michael together ea

rn $3,800, how much does Brian earn? Answer Choices
Mathematics
1 answer:
kumpel [21]3 years ago
4 0
Lets assign some variables: Let
y = Darren + Michael
x = Brian.
Given:
y = 2x + 30 (Darren and Michael [y] earn [=] 30 more than[+30] twice what Brian earns[2x])
y = 3800 (Darren and Michael [y] earn [=] $3800)
Solve for x: What Brian earns.

I will solve this by substitution. Plugging in 3800 for y:
3800 = 2x + 30 subtract 30 from both sides
3770 = 2x divide by 2 on both sides
1885 = x flip the equation
x = 1885
Brian earns $1885 per month.
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