Question

1.За 3,5 килограмма картофеля заплатили 73,5 рубля. Сколько надо заплатить за 10,5 килограмма такого картофеля? 2. От города до посёлка автомобиль доехал за 3часа. Если бы скорость была увеличена на 25км/ч, то путь длился бы 2 часа. С какой скоростью ехал автомобиль и чему равно расстояние от города до посёлка?

Answer 1

1. 73.5/3.5=21р кг
21*10.5=220.5р за 10.5 кг

Answer 2

Answer:

1. Price for 10.5 kilograms of potatoes: - For 3.5 kilograms of potatoes, the price was 73.5 rubles. - To find the price for 10.5 kilograms, we can use the unitary method. - The price for 1 kilogram of potatoes can be calculated as 73.5 / 3.5 = 21 rubles. - Therefore, the price for 10.5 kilograms of such potatoes would be 10.5 * 21 = 220.5 rubles.

[[1 #1]]

2. Speed of the car and distance from the city to the village: - Let's assume the initial speed of the car as 'x' km/h and the distance from the city to the village as 'd' km. - According to the given information, the car took 3 hours to cover the distance at speed 'x' km/h. - When the speed was increased by 25 km/h, the car covered the same distance in 2 hours. - Using the formula: time = distance / speed, we can set up the following equations: - d / x = 3 (for the initial speed) - d / (x + 25) = 2 (for the increased speed) - Solving these equations, we find that the initial speed of the car was 50 km/h and the distance from the city to the village was 150 km.

[[2 #1]]