Предмет: Математика, автор: vikanikolaeva1

помогите решить 48, 50 и 51.

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Ответы

Автор ответа: olgaevgrafova

0

48. 82-14=68(км/ч)
82+68=150(км/ч)
600:150=4(ч)
ответ:через 4ч
50.
180:4=45(км/ч)
45+15=60(км/ч)
180:60=3(ч)
ответ: потратил 3ч

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