Question

На остановке в начали маршрута в автобус несколько пассажиров.После этого на первой остановке из автобуса вышли 9 пассажиров, а вошли 4 человека, на второй - вышли 3 и вошли 7,на третьей вышли 5.В результате в автобусе осталось 12 пассажиров. Сколько пассажиров в автобусе в начале маршрута?​

Answer 1

Ответ:

в начале маршрутта вошли 18 посажиров

Answer 2

Calculation of the Initial Number of Passengers

To calculate the initial number of passengers on the bus, we need to consider the number of passengers who got on and off at each stop.

Let's break down the information given:

- At the first stop, 9 passengers got off and 4 passengers got on. - At the second stop, 3 passengers got off and 7 passengers got on. - At the third stop, 5 passengers got off.

We are also given that there were 12 passengers remaining on the bus at the end of the route.

To find the initial number of passengers, we can work backwards from the final number of passengers.

Let's denote the initial number of passengers as x.

At the first stop, 9 passengers got off and 4 passengers got on, so the number of passengers changed by -9 + 4 = -5.

At the second stop, 3 passengers got off and 7 passengers got on, so the number of passengers changed by -3 + 7 = 4.

At the third stop, 5 passengers got off, so the number of passengers changed by -5.

Therefore, the total change in the number of passengers is -5 + 4 - 5 = -6.

Since there were 12 passengers remaining on the bus at the end of the route, we can set up the equation:

x - 6 = 12

Solving for x, we find:

x = 18

Therefore, the initial number of passengers on the bus at the start of the route was 18.

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