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MemberNovember 19, 2020 at 5:12 pm
Walmart is advertising a special for Irish Spring Original Deodorant Soap 3 bars (2 pack) Total of six for $10.00.
The constant of proportionality is 3:5
I can scale in tandem up and down. In order to find the rate I scaled up to get two packs with 12 bars for $20. To find the bar of soap per dollar you partitively divide 12/20ths reduced to 3/5ths of a bar of soap per dollar. If you want to know the dollar rate per bar of soap you partitively divide 20/12 or 5/3 and get $1. 666 or round to 1.67 per bar.T