Mathematics, 13.02.2020 18:55 emmabarnett817

Katrina and Becca exchanged 270 text messages in 45 minutes. An equal number of texts was sent each minute. The girls can send 90 more text messages before they are charged additional fees. At this rate, for how many more minutes can the girls exchange texts before they are charged extra?

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Katrina and Becca exchanged 270 text messages in 45 minutes. An equal number of texts was sent each...