Question

@ cost of 30 envelope is $ 210 .In $ 510 how many envelope we can purchase

Answer 1

Hey,

Your answer,

Cost of 30 envelope = 210

Cost of 1 envelope = 210/30 = 7 $

The number of envelopes you can purchase at 510 = 510/7

Or 72.8

Rounding off gives 73.

Hope it works for you!