Let's write some equations.
Mingwei's distance from Town A after
![x](https://tex.z-dn.net/?f=x)
hours from 8:00 is
![45x](https://tex.z-dn.net/?f=45x)
.
Ali's distance from Town B after
![x](https://tex.z-dn.net/?f=x)
hours is
![30x-20](https://tex.z-dn.net/?f=30x-20)
, since he doesn't start walking for 40 minutes.
When Mingwei's distance is twice Ali's, they've met up (since their distance from Town A is twice their distance from Town B).
So, this gives
![45x=60x-40](https://tex.z-dn.net/?f=45x%3D60x-40)
, so
![15x=40](https://tex.z-dn.net/?f=15x%3D40)
, so
![x=\frac{40}{15} = \frac{8}{3}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B40%7D%7B15%7D%20%3D%20%5Cfrac%7B8%7D%7B3%7D)
, so the time is 10:40.
After
![\frac83](https://tex.z-dn.net/?f=%5Cfrac83)
hours, Mingwei has traveled
![45 * 8 / 3 = 120](https://tex.z-dn.net/?f=45%20%2A%208%20%2F%203%20%3D%20120)
kilometers while Ali has traveled sixty, so the distance between the towns is
![180](https://tex.z-dn.net/?f=180)
kilometers.
Answer:
Two hundred seventy three thousand and fifty .
Step-by-step explanation:
Given : (27 thousands 3 hundreds 5 ones) x 10
Solution:
27 thousands 3 hundreds 5 ones = 27,305
So, ![27,305 \times 10](https://tex.z-dn.net/?f=27%2C305%20%5Ctimes%2010)
![273,050](https://tex.z-dn.net/?f=273%2C050)
Periods are counted from last .
The 1st period consists of ones, tens and hundred.
The 2nd period consists of thousand, 10 thousand and 100 thousands.
The 3rd period consists of million, 10 million and 100 million.
So, 273,050 is Two hundred seventy three thousand and fifty
Hence (27 thousands 3 hundreds 5 ones) x 10 is Two hundred seventy three thousand and fifty .
I believe you meant to say that if Samantha bought 510 pounds of hamburger, how much will she pay?
Now from the information we already have, we know that 3 pounds of hamburger will cost 6 dollars.
The next thing we need to know is how much one pound of hamburger will cost. This will help us calculate how much the rest will cost.
we now form an equation to assist us.
3 = 6
1= x
(where x represents the unknown price of one pound of hamburger)
Now we must cross-multiply:
3 * x = 6 x 1
3x = 6
x = 6/3
x = 2
therefore one pound of hamburger costs 2 dollars.
Now, If one pound costs 2 dollars, how about 510 pounds?
We simply multiply: 510 x 2 = 1,020
Therefore Samantha will pay 1, 020 dollars for 510 pounds of hamburger.