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1. The test hasn't been finished in time yet
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C. Speaking
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3. Which is your school?
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5. Who is your
Ở đâu jợ ....................................................................................... Chắc của chị Huyền hả
1.Linh is taller than Trang
2.Ha Long Bay is more famous than Phu Quoc Island
3.Who is the best student in our class?
4.Ngoc is the most intelligent in our class
(1)convenient
(2)living
(3)terrible
(4)suburbs
Ex 19
(1) convenient (2) living (3) terrible (4) suburbs
I am an organizer of the Maths-English contest, so of course I'd love to answer these topics!
Calling the number of apples the sister left for her brothers x [apple(s), \(x\in N\)*].
With the first statement related to the question, the oldest brother divided the apples into three parts, leaving an apple to the youngest one. So the number of apples left for the two younger brothers is: \(\dfrac{x}{3}+\left(\dfrac{x}{3}+1\right)=\dfrac{2x+3}{3}\).
With the second statement, the middle brother divided the apples into three thirds and gave away one apple in his ration. So therefore, the number of apples left for the youngest brother is: \(\dfrac{\dfrac{2x+3}{3}}{3}+\left(\dfrac{\dfrac{2x+3}{3}}{3}+1\right)=2.\dfrac{2x+3}{9}+1=\dfrac{4x+6}{9}+1=\dfrac{4x+15}{9}\).
With the third statement, the youngest brother woke up and saw 7 apples. So we have:
\(\dfrac{4x+15}{9}=7\)
\(\Leftrightarrow4x+15=63\).
\(\Leftrightarrow4x=48\).
\(\Leftrightarrow x=12\). This answer satisfies the conditions of x.
Thanks everyone for your interest to this answer. And don't forget, the Vietnam English-Maths Contest hosted by me and VICE members will begin in the 29th of June, 2021 ^^
úi, idollllll :v