jada6292
02.07.2019 •
Mathematics
Joni usually buys 20 pounds of dog food at the pet store for $19.95. she gets a coupon in the mail for 15% off a 10 pound bag, normally priced at $12.95. which is cheaper per pound?
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Ответ:
19.95
Step-by-step explanation:
This is one of those questions that are a must do. The process is called estimation and if you follow it carefully, you learn a lot.
Round 19.95 to 20
Round 12.95 to 13 dollars. You get 15% off. which is about (1.50 + 0.75 = 2.25)
This the 10 pound bag down to 13 - 2.25 = 10.75. This is higher than 1 dollar per pound.
20 pounds for 20 dollars = 1 dollar per pound.
Ответ:
khan academy will help
Step-by-step explanation: