Предмет: Математика, автор: galkaelka

За три дня турист прошёл 64 км, причём за второй 3/7 расстояния , пройденного за первый,а за третий 40% расстояния пройденного за первый. Сколько км прошёл турист за каждый день?

Ответы

Автор ответа: Primevlaw

1 день-x
2 день-3/7x
3 день-2/5x
x+3/7x+2/5x=64
x+15/35x+14/35x=64
1 29/35x=64|:1 29/35
x=64*35/64=35(км)-1 день
2 день=35*3/7=15км
3 день=35*2/5=14ки

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