Предмет: Математика, автор: сальникова

Автомашина в первый час прошла 48,3 км , во второй час - на 15,8 км меньше чем в первый , а в третий час - на 24,3 км меньше, чем за первые два часа вместе.Какой путь  прошла автомашина за эти три часа?

 

Ответы

Автор ответа: momot
0

48,3-15,8=32,5км во второй час,

48,3+32,5=80,8км первые два часа вместе,

80,8-24,3=56,5 км в третий час,

80,8+56,5=137,3км прошла автомашина за  три часа

Автор ответа: liza12
0

1) 48,3-15,8=32,5(км) - проехала машина во 2 час

2) 48,3+32,5=80,8(км) - проехала машина в 1 и 2 часы

3) 80,8-24,3=56,5(км)- проехала машина в 3 час

4 48,3+32,5+56,5= 137,3(км)- проехала машина за 3 часа

Ответ. 137,3 км.

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