завершая сотый круг, лидер опередил основную группу на 3 круга. определить среднюю скорость лидера, если средняя скорость группы 45 км в час.
решение: составим 2 уравнения для группы и для лидера т.к. время у них одинаково, приравнваем и получаем
Somethings coming I can feel it Through the darkness We can't stop it Waves of terror We must ride them There's no turning We stand as one We all want the same thing We all want our freedom. Will I live to see another day Will I live to see the sunrise Keep believing it's the only way I'm never running from this fight I would give my all to save you Save you from what threatens us But I know when I look in your eyes That what we're doing here is right Armies marching Can you hear them Come daylight We must face them Seas of anger Rise against us There's no turning We stand as one We all want the same thing In our hands a burning spear Our hearts on fire We feel no fear I will shield us all around From sky to ground And our breathing is the only sound Will I live to see another day Will I live to see the sunrise Keep believing it's the only way I'm never running from this fight I would give my all to save you Save you from what threatens us But I know when I look in your eyes Тhat what we're doing here is right
1/3x+100=1/2x
100=1/2x-1/3x
100=3/6x-2/6x
100=1/6x
x=100:1/6
x=600
ответ:600 рублей