Question

Автомобиль при подъеме на гору снизил скорость на 25% . с какой скоростью двигался автомобиль по равнине если в гору он ехал со скоростью 51 Км /ч

Answer 1

51 км/x-это 75% от скорости по равнине, значит, 
по равнине он ехал со скоростью 51:3*4=68 км/ч

Answer 2

Calculation of Speed on a Flat Surface

To determine the speed of the car on a flat surface, we need to consider that the car's speed decreased by 25% while going uphill at a speed of 51 km/h.

To calculate the speed on a flat surface, we can use the following formula:

Speed on Flat Surface = Speed Uphill / (1 - Percentage Decrease)

In this case, the speed uphill is 51 km/h, and the percentage decrease is 25%.

Plugging these values into the formula, we get:

Speed on Flat Surface = 51 km/h / (1 - 0.25) = 51 km/h / 0.75 = 68 km/h

Therefore, the car was traveling at a speed of 68 km/h on the flat surface.