Question

Из трактира в противу полуночных направлениях выехали два всадника.Через 4ч. между ними было 132 км.Скорость одного всадника 18 километров в час.Какова скорость второго всадника?

Answer 1

18*4=72 132-72=60 км ч

Answer 2

Problem Analysis

We are given that two riders set off from a tavern in opposite directions. After 4 hours, the distance between them is 132 km, and we are also given the speed of one of the riders, which is 18 km/h. We need to determine the speed of the second rider.

Solution

Let's assume the speed of the second rider is x km/h.

Since the riders are traveling in opposite directions, the total distance covered by both riders in 4 hours is equal to the distance between them, which is 132 km.

The distance covered by the first rider in 4 hours is given by the formula: distance = speed * time. Therefore, the distance covered by the first rider is 18 km/h * 4 h = 72 km.

The distance covered by the second rider in 4 hours is also 132 km - 72 km = 60 km.

Therefore, the speed of the second rider is 60 km / 4 h = 15 km/h.

Answer

The speed of the second rider is 15 km/h.

Verification

Let's verify the answer using the given information.

The distance covered by the first rider in 4 hours is 18 km/h * 4 h = 72 km.

The distance covered by the second rider in 4 hours is 15 km/h * 4 h = 60 km.

The total distance covered by both riders in 4 hours is 72 km + 60 km = 132 km, which matches the given information.

Therefore, the answer is verified to be correct.