Question

На выполнение домашних заданий по математике литературе и географии Митя потратил 1 час 40 минут на математику у него ушло 40% этого времени, на литературу минус 45% оставшегося. Сколько времени Митя выполнял задание по географии?

Answer 1

1ч 40мин = 100 мин
1)100 * 40 : 100 = 40 (мин.)-ушло на выполнение математики
2)100 - 40 = 60 (мин.)-ушло на выполнение лит-ры и географии.
3)60 * 45 : 100 = 27 (мин.)-ушло на выполнение лит-ры.
4)27+40=67(мин.)-ушло на выполнение математики и лит-ры.
5)100-67=33(мин.)-ушло на выполнение геграфии.
Ответ : 33 минуты .

Answer 2

Calculation of Time Spent on Each Subject

To determine the amount of time Mitya spent on geography, we need to calculate the time he spent on mathematics and literature first.

Mitya spent 1 hour and 40 minutes on mathematics, which is equivalent to 100 minutes.

He used 40% of this time for mathematics, which is equal to 40% of 100 minutes = 40 minutes.

The remaining time for literature is 100 minutes - 40 minutes = 60 minutes.

Mitya then spent 45% less time on literature, which is equal to 45% of 60 minutes = 27 minutes.

Therefore, Mitya spent 60 minutes - 27 minutes = 33 minutes on literature.

Time Spent on Geography

To find out how much time Mitya spent on geography, we need to subtract the time spent on mathematics and literature from the total time spent on homework.

Mitya spent 1 hour and 40 minutes on his homework, which is equivalent to 100 minutes.

He spent 40 minutes on mathematics and 33 minutes on literature, which adds up to 40 minutes + 33 minutes = 73 minutes.

Therefore, Mitya spent 100 minutes - 73 minutes = 27 minutes on geography.

So, Mitya spent 27 minutes on the geography assignment.

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