1) 60 + 70 = 130 км/ч скорость сближения
2) 390 : 130 = 3 часа через столько встретятся
По условию. первое число относится ко второму как 2:3,
<u>85:10=8(ост.5)</u> 53:5=12(ост.3) <u>127:12=10(ост.7) </u>73:7=9(ост.10)
1. You didn't climb a big tree yesterday.
2. You didn't wash your dad's car last Saturday.
3. You didn't walk in the park late at night.
4. You didn't stay at home all day yesterday.
5. You didn't paint your room yesterday.
3*5=15 м ------------------