Question

На детской площадке катались дети на двухколесных и трехколесных велосипедах. Сколько трехколесных велосипедов было на площадке, если всего было 65 колёс и 29 велосипедов?

Answer 1

1) 21:3=7(велосипедов)- трёхколёсных
2) 8:2=4(велосипедов)-двухколёсных

Answer 2

Calculation of the Number of Tricycles on the Playground

To determine the number of tricycles on the playground, we can use the information provided: there were a total of 65 wheels and 29 bicycles. We need to find the number of tricycles, which have three wheels each.

Let's assume the number of tricycles is represented by x.

The total number of wheels can be calculated by multiplying the number of bicycles by 2 (since each bicycle has two wheels) and adding the number of tricycles multiplied by 3 (since each tricycle has three wheels):

2 * 29 (number of bicycles) + 3 * x (number of tricycles) = 65 (total number of wheels)

Simplifying the equation:

58 + 3x = 65

Subtracting 58 from both sides:

3x = 7

Dividing both sides by 3:

x = 7/3

Since we cannot have a fraction of a tricycle, we need to round the result to the nearest whole number. In this case, rounding up would be appropriate, as having a fraction of a tricycle is not possible.

Therefore, the number of tricycles on the playground is 3.

Please note that the sources provided did not directly answer the question. The calculation was done based on the information given.