81 units of the first class and three times fewer units of the second class.
Increase each recorded number by 89 units of the second class and 43 units of the first class.
A plane traveled a total of 6,590 km. For 4 hours, it flew at a speed of 920 km/h, and the remaining distance was covered at a speed of 970 km/h. a) How many total hours was the plane in flight?
81 units of the first class and three times fewer units of the second class.
Increase each recorded number by 89 units of the second class and 43 units of the first class. kontrolnaja po matematike 4 klass zankov
A plane traveled a total of 6,590 km. For 4 hours, it flew at a speed of 920 km/h, and the remaining distance was covered at a speed of 970 km/h. a) How many total hours was the plane in flight? 81 units of the first class and three