Math  /  Algebra

QuestionХоёр тооны нийлбэр 2024 их тоо бага тоонд хуваахад / ноогдож 16 үлдэнэ. Эдгээр 257 1773 202.17 Хэрэв тооны гуравны нэг дээр 20-г нэмэхэд анхны тооноос 251= 1713 Дахин их тоо гардаг бол уг тоог ол. Бутархайн хуртвэр хуваарийн нийлбэр 21 хуртвэрээс 2-ыг хасаж хуваарь дээр 1-ийг

Studdy Solution

STEP 1

What is this asking? We've got two separate puzzles here!
One involves two numbers that add up to 2024, with a specific remainder when dividing.
The other asks us to find a number based on how it relates to one-third of itself plus 20. Watch out! Don't mix up the two problems!
And remember, remainders mean we might have to do some clever subtracting.

STEP 2

1. Solve the division puzzle
2. Solve the one-third plus 20 puzzle

STEP 3

Alright, let's tackle the first mystery!
We know two numbers add up to **2024**, and when we divide the bigger one by the smaller one, we get a remainder of **16**.

STEP 4

Think of it like this: If it weren't for that pesky remainder, the bigger number would be a perfect multiple of the smaller number.
So, let's subtract that remainder!  202416=2008\ 2024 - 16 = 2008 .
Now, we know that  2008\ 2008 is perfectly divisible by the smaller number.

STEP 5

We also know that the two numbers add up to  2024\ 2024 .
Since we subtracted the  16\ 16 from the total, we need to subtract it from the larger number as well.
Let's call the smaller number x x .
Then, the larger number is x+16 x + 16 .
So, x+(x+16)=2024 x + (x + 16) = 2024 .
Simplifying gives us 2x+16=2024 2x + 16 = 2024 .

STEP 6

Subtract 16 16 from both sides: 2x=202416 2x = 2024 - 16 , which means 2x=2008 2x = 2008 .
Now, divide both sides by  2\ 2 : x=20082 x = \frac{2008}{2} , so x=1004 x = 1004 .
That's our smaller number!

STEP 7

The larger number is  20241004=1020\ 2024 - 1004 = 1020 .
Let's check:  10201004=1\ \frac{1020}{1004} = 1 with a remainder of  16\ 16 .
Perfect!

STEP 8

Let's call our mystery number y y .
The problem says one-third of the number (13y \frac{1}{3} \cdot y ) plus  20\ 20 equals twice the original number (2y 2 \cdot y ).
Let's write that as an equation: 13y+20=2y \frac{1}{3} \cdot y + 20 = 2 \cdot y .

STEP 9

Let's get rid of the fraction!
Multiply everything by  3\ 3 : 3(13y+20)=3(2y) 3 \cdot (\frac{1}{3} \cdot y + 20) = 3 \cdot (2 \cdot y) .
This simplifies to y+60=6y y + 60 = 6y .

STEP 10

Now, subtract y y from both sides: 60=6yy 60 = 6y - y , which means 60=5y 60 = 5y .

STEP 11

Finally, divide both sides by  5\ 5 : y=605 y = \frac{60}{5} , so y=12 y = 12 .
Our mystery number is  12\ 12 !

STEP 12

The two numbers that add up to 2024 and have a remainder of 16 when divided are **1004** and **1020**.
The mystery number that becomes twice itself when you take one-third of it and add 20 is **12**.

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