Question

В нефтяныхранилеще привезли 30цестерн с нефтью в каждой из которых было по 16 1/2 т нефти В первы день на перерабатывающий завод отправили 30% всего количество нефти , а во второй день -80% оставшегося количество нефти Сколько тонн нефти осталось в нефтяныхранилещнефтяныхранилеще?

Answer 1

Сначала узнаем полный объём нефти в 30 цистернах

30*16 1/2=495 тонн

затем отправили 30%

пропорция
495 - 100%
х     -30%
х=495*30/100=148,5 тонн

затем нужно узнать сколько осталось в хранилище

495-148,5=346,5 тонн

затем от этого объёма забрали 80%

пропорция

346,5 - 100%
х      - 80%
х=346,5*80/100=277,2 тонны увезли

а осталось вот это

346,5-277,2=69,3 тонны

Answer 2

Calculation of Remaining Oil in the Oil Storage Facility

To calculate the remaining oil in the oil storage facility, we need to determine the amount of oil that was sent to the processing plant on the first and second days.

Given information: - 30 cisterns were brought to the oil storage facility. - Each cistern contained 16 1/2 tons of oil. - On the first day, 30% of the total amount of oil was sent to the processing plant. - On the second day, 80% of the remaining oil was sent to the processing plant.

Let's calculate the amount of oil sent to the processing plant on each day:

First Day: - Total amount of oil in the storage facility: 30 cisterns * 16 1/2 tons = 495 tons. - Amount of oil sent to the processing plant on the first day: 30% * 495 tons = 0.3 * 495 tons = 148.5 tons.

Second Day: - Remaining oil in the storage facility after the first day: 495 tons - 148.5 tons = 346.5 tons. - Amount of oil sent to the processing plant on the second day: 80% * 346.5 tons = 0.8 * 346.5 tons = 277.2 tons.

To calculate the remaining oil in the oil storage facility, we subtract the total amount of oil sent to the processing plant from the initial amount of oil:

Remaining oil = Initial amount of oil - Amount of oil sent to the processing plant on the first day - Amount of oil sent to the processing plant on the second day.

Remaining oil = 495 tons - 148.5 tons - 277.2 tons.

Remaining oil = 69.3 tons.

Therefore, there are 69.3 tons of oil remaining in the oil storage facility.