Question

В «Детском мире» продавали двухколёсные и трёхколёсные велосипеды. Миша пересчитал все рули и все колёса. Получилось 12 рулей и 27 колёс. Сколько трёхколёсных велосипедов продавали в «Детском мире»?

Answer 1

Х - кол. двухколёсных велос.
у - кол. трехколесных велос., тогда
х+у=12
2х+3у=27

х=12-у
2(12-у)+3у=27
24-2у+3у=27
у=27-24

у=3
12-3=9
ответ: трехколесных велосипедов 3, а двухколёсных 9.

Answer 2

Calculating the Number of Tricycles Sold in "Detsky Mir"

To calculate the number of tricycles sold in "Detsky Mir," we can use the information provided about the total number of handlebars and wheels counted by Misha.

Misha counted a total of 12 handlebars and 27 wheels from the bicycles.

We can use this information to determine the number of tricycles sold in "Detsky Mir."

Calculation

Misha counted 12 handlebars and 27 wheels. Let's calculate the number of tricycles sold.

We can use the following equations to solve for the number of tricycles: 1. 12 * 2 = 24 (total number of wheels if all bicycles were two-wheelers) 2. 27 - 24 = 3 (extra wheels beyond the total for two-wheelers)

Therefore, the number of tricycles sold in "Detsky Mir" is 3.

This calculation is based on the information provided about the total number of handlebars and wheels counted by Misha.

I hope this helps! If you have any other questions, feel free to ask.