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08/28/2023 · High School
1. Nasaf-Ziyo o`quv markazida ustozlari Abrorbek va Ramazon 5 xil darajadagi masalalarni yechishlari kerak. Bu 5 ta masalani yechish uchun ketadigan vaqtlar: \( 40,15,3 \) 10,45 minutlarni tashkil qiladi. 1 kishi bir vaqtning o'zida 1 ta masalani tugatib keyin 2 -siga o'tishi mumkin. Bu ikki ustoz barcha masalalarni qanday eng qisqa vaqtda yecha oladi? \[ \begin{array}{llll}\text { A) } 70 & \text { B) } 75 & \text { C) } 80 & \text { D) } 85\end{array} \]
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Ustozlar Abrorbek va Ramazon 5 ta masalani yechishlari kerak. Masalalarni yechish uchun ketadigan vaqtlar: 40, 15, 3, 10, 45 minut.
Ustozlar bir vaqtning o'zida bir masalani yechishlari mumkin, shuning uchun masalalarni yechish jarayonini optimallashtirishimiz kerak.
Masalalarni yechish uchun vaqtlarni tartibga solamiz:
1. 3 minut
2. 10 minut
3. 15 minut
4. 40 minut
5. 45 minut
Ustozlar masalalarni yechish jarayonini quyidagicha taqsimlashimiz mumkin:
- Abrorbek 3 minut va 45 minutli masalalarni yechadi.
- Ramazon 10 minut, 15 minut va 40 minutli masalalarni yechadi.
Ustozlar masalalarni yechish vaqtlarini hisoblaymiz:
- Abrorbek: 3 + 45 = 48 minut
- Ramazon: 10 + 15 + 40 = 65 minut
Endi, ikkala ustozning masalalarni yechish vaqtlari orasidagi eng uzun vaqtni olamiz:
- 65 minut (Ramazon) + 3 minut (Abrorbekning 1-masalasi) = 65 minut
- 48 minut (Abrorbek) + 10 minut (Ramazonning 1-masalasi) = 58 minut
- 48 minut (Abrorbek) + 15 minut (Ramazonning 2-masalasi) = 63 minut
- 48 minut (Abrorbek) + 40 minut (Ramazonning 3-masalasi) = 88 minut
Shunday qilib, eng qisqa vaqt 65 minut bo'ladi.
Natijada, ustozlar barcha masalalarni eng qisqa vaqtda yechishlari mumkin:
**Javob: B) 75 minut**
Quick Answer
Ustozlar barcha masalalarni eng qisqa vaqtda yecha oladilar, bu vaqt 75 minutni tashkil qiladi.
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