Question

cost of 70 envelopes is $35. how many envelopes can be purchased for $10

Answer 1

let the no. of envelopes be x.
70:35::x:10
PRODUCT OF EXTREME=PRODUCT OF MEANS
700=35X
X=700/35
=20 envelopes
hope it helps...
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Answer 2

Pls mark brainliest pls pls.