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ANTONII [103]
3 years ago
7

William and amy are stuffing envelopes for a charity. today William stuffed a total of 70 envelopes. this was 10 more than twice

the number of envelopes that amy stuffed. how many envelopes did amy stuff?
Mathematics
2 answers:
serg [7]3 years ago
7 0
The number of envelopes Amy stuffed = x
twice the number of envelopes Amy stuffed = 2x
10 more than twice the number of envelopes Amy stuffed = 2x+10

2x+10=70 \\
2x=70-10 \\
2x=60 \\
x=30

Amy stuffed 30 envelopes.
DedPeter [7]3 years ago
5 0
William stuffed 70
W=70
this was 10 more than (+10) twice the number of envelopes (2a) amy stuffed
W=10+2A
find A
W=70
70=10+2A
subtract 10 from both sides
60=2A
divide both sides by 2
30=A
amy stuffed 30 envelopes
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