Question

Лодка плывет по течению реки. Собственная скорость лодки а км/ч, а скорость течения b км/ч. Какое расстояние проплывет лодка по течению реки за 1,4 часа? Вычислите при а=8,25и b=2

Answer 1

скорость лодки по течению - a+b

расстояние = (a+b)*1,4

при а=8,25и b=2

(8,25+2)*1,4=10,25*1,4=14,35 (км)

Answer 2

Calculation of Distance Traveled by a Boat in a River Current

To calculate the distance traveled by a boat in a river current, we need to consider the boat's own speed and the speed of the river current. Let's denote the boat's speed as a km/h and the speed of the river current as b km/h.

The formula to calculate the distance traveled by the boat in a river current is:

Distance = (a + b) × time

Given that the boat travels for 1.4 hours, we can substitute the values of a = 8.25 km/h and b = 2 km/h into the formula to find the distance traveled.

Distance = (8.25 + 2) × 1.4

Now, let's calculate the distance:

Distance = 10.25 × 1.4

Distance = 14.35 km

Therefore, the boat will travel a distance of 14.35 km in the river current in 1.4 hours.