Question

Для новогодних подарков привезли 10 кг конфет, что в 5 раз меньше, чем фруктов. Сколько килограммов фруктов привезли? Ластик стоит 3 рубля, что в 9 раз меньше, чем шариковая ручка. Сколько стоит шариковая ручка? На машине до Воронежа можно доехать за 6 часов, это в 3 раза дольше, чем до Можайска. За сколько часов можно доехать до Можайска? Мальчик собрал домик из 20 кубиков, что в 2 раза меньше, чем количество кубиков в замке. Сколько кубиков понадобилось мальчику чтоб построить замок?

Answer 1

Ответ:

Первая задача: 10÷5=2кг

Вторая задача: 9×3=27 рублей

Третья задача: 6÷3=2 часа

Четвёртая задача: 20×2=40 кубиков

Answer 2

Calculation of Fruit Weight

To find out how many kilograms of fruit were brought, we need to determine the weight of the candies first. The problem states that 10 kg of candies is 5 times less than the weight of the fruit. This means that the weight of the fruit is 5 times greater than the weight of the candies.

Let's denote the weight of the candies as C and the weight of the fruit as F. According to the problem, we have the equation:

C = 10 kg

F = 5C

To find the weight of the fruit, we substitute the value of C into the equation for F:

F = 5 * 10 kg = 50 kg

Therefore, 50 kilograms of fruit were brought.

Calculation of Pen Price

To determine the price of the ballpoint pen, we need to know the price of the eraser first. The problem states that the eraser costs 3 rubles, which is 9 times less than the price of the ballpoint pen. This means that the price of the ballpoint pen is 9 times greater than the price of the eraser.

Let's denote the price of the eraser as E and the price of the ballpoint pen as P. According to the problem, we have the equation:

E = 3 rubles

P = 9E

To find the price of the ballpoint pen, we substitute the value of E into the equation for P:

P = 9 * 3 rubles = 27 rubles

Therefore, the ballpoint pen costs 27 rubles.

Calculation of Travel Time to Mozhaysk

To determine the travel time to Mozhaysk, we need to know the travel time to Voronezh first. The problem states that it takes 6 hours to travel to Voronezh, which is 3 times longer than the travel time to Mozhaysk. This means that the travel time to Mozhaysk is 3 times shorter than the travel time to Voronezh.

Let's denote the travel time to Mozhaysk as M and the travel time to Voronezh as V. According to the problem, we have the equation:

V = 6 hours

M = V/3

To find the travel time to Mozhaysk, we substitute the value of V into the equation for M:

M = (6 hours)/3 = 2 hours

Therefore, it takes 2 hours to travel to Mozhaysk.

Calculation of Cubes for Building a Castle

To determine the number of cubes needed to build a castle, we need to know the number of cubes used to build the house first. The problem states that the house is built using 20 cubes, which is 2 times less than the number of cubes used for the castle. This means that the number of cubes used for the castle is 2 times greater than the number of cubes used for the house.

Let's denote the number of cubes used for the house as H and the number of cubes used for the castle as C. According to the problem, we have the equation:

H = 20 cubes

C = 2H

To find the number of cubes used for the castle, we substitute the value of H into the equation for C:

C = 2 * 20 cubes = 40 cubes

Therefore, 40 cubes are needed to build the castle.