Предмет: Математика, автор: rima8282p2iacz

Если Нурлан доехал расстояние 2/5 с дачи до станции , чтобы доехать до середины дачи и станции ещё должен был ехать 4 целых 3/10 км. Сколько км расстояние дачи и станции? Ответы: 43; 45; 40; 42

Ответы

Автор ответа: xxxeol
0
РЕШЕНИЕ
Половина -  1/2.
1) 1/2 - 2/5 = 1/10 - до середины пути осталось (и это 4 3/10 км.)
2) S = 4 3/10 * 10 = 43 км - всё расстояние - ОТВЕТ
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