Question

В трёх домах 460 квартир. Во втором доме 120 квартир, в третьем доме в 2 раза больше квартир, чем во втором. Сколько квартир в первом доме?

Answer 1

1) 120•2 =240(кв) — в третьем доме;
2) 120 + 240 = 360(кв)— вместе во втором і третьем домах;
3) 460-360=100(кв)
Відповідь: 100 квартир в первом доме

Answer 2

1) 120*2=140
2)120+140=260
3)460-260=200(кв)-во 1 доме

Answer 3

Calculating the Number of Apartments in Each Building

To find the number of apartments in the first building, we can use the information provided about the number of apartments in the second and third buildings.

Given: - The second building has 120 apartments. - The third building has twice as many apartments as the second building.

Let's calculate the number of apartments in the third building and then use that to find the number of apartments in the first building.

Calculation

The third building has twice as many apartments as the second building, which means it has 120 * 2 = 240 apartments.

Now, to find the number of apartments in the first building, we can use the total number of apartments in all three buildings, which is 460.

So, the number of apartments in the first building is: 460 - (120 + 240) = 100 apartments.

Therefore, there are 100 apartments in the first building.