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3 years ago

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two years ago randi earned $18,400. last year she earned $19,700. suppose she earns $21,600 this year. how much would randi have

to earn next year so that her four year average is $21,000

1 answer:

Simora [160]3 years ago

3 0

$24,300

18,400+19700+21600=59700
(59700+ x)/4 =21000
Multiply both sides by 4
59700+x=84000
Subtract 59700 both sides
X=24300

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