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bunny2288
02.09.2019 •
Mathematics
Unit rates
national mobile-300 texts for $9.99
airtime-500 texts for 17.99
which is the better buy?
Solved
Show answers
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Ответ:
National Mobile = 9.99/300 = 0.0333 cost per text
Airtime = 17.99/500 = 0.03598 cost per text
National Mobile is cheaper than Airtime. It is 0.00268 cheaper per text.
Compare:
0.0333 x 500 text = 16.65 of National Mobile vs 17.99 of Airtime.
0.03598 x 300 text = 10.794 of Airtime vs 9.99 of National Mobile.
Ответ:
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Step-by-step explanation: