Предмет: Математика, автор: вероничка0002

отремонтировали 35% дороги. Сколько километров дороги осталось отремонтировать, если отремонтировали 30,1 км

Ответы

Автор ответа: Malfusha

решаем пропорцией:
30, 1/35=х/100 (дробная черта)
35х=3, 010
делим все на 35
х=86 (км)
в 100 процентах 86 км.
1%=0, 86
100-35=65
65*0, 86=55, 9
ответ. осталось отремонтировать 55, 9км дороги

Автор ответа: Dan2407

30,1/35*100=86(км)-вся дорога

86-30,1=55,9(км)-дороги осталось отремонтировать

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