Let n represent the amount Colin earned on Sunday.
On Sat. he earned n/2; on Sun. he earned n; and on Friday he earned (1/2)(n/2).
Then n/2 + n + n/4 = $70
Mult. all terms by 4 to eliminate fractions:
2n + 4n + n = $280
7n = $280 => n = $40
Colin earned n/2, or $20, on Saturday; n, or $40, on Sunday; and n/4, or $10, on Friday.
Note that $20 and $40 and $10 add up to $70, as they must.
Answer:
240.
Step-by-step explanation:
Here is the correct question: Three sister are getting new outfits. shirts cost 11 each,skirts coat 25 each and shoes cost 44 a pair. what is the total cost of the new outfits for all of the sisters?
Given: Cost of each shirt is 11
Cost of each skirts coat is 25
Cost of each pair of shoes cost is 44.
Now, finding total cost of shirt, skirt coat and shoes as cost of one new outfit.
= ![11+25+44 = 80](https://tex.z-dn.net/?f=11%2B25%2B44%20%3D%2080)
∴ Total cost of one new outfit is 80.
Next, finding cost of new outfit for all, three sisters.
Cost of new outfit for three sister = ![\textrm { cost of one outfit}\times \textrm{ number of sisters}](https://tex.z-dn.net/?f=%5Ctextrm%20%7B%20cost%20of%20one%20outfit%7D%5Ctimes%20%5Ctextrm%7B%20number%20of%20sisters%7D)
∴ Cost of new outfit for three sister = ![80\times 3= 240](https://tex.z-dn.net/?f=80%5Ctimes%203%3D%20240)
240 is the total cost of new outfit for all the sisters.
Translating the words into formula, we have
![r = \dfrac{p}{w}](https://tex.z-dn.net/?f=r%20%3D%20%5Cdfrac%7Bp%7D%7Bw%7D)
In fact, we have that the pay rate is the total payment divided by the number of hours worked.
We can solve this formula for w in two steps: starting from the formula above, multiply both sides by w:
![rw = p](https://tex.z-dn.net/?f=rw%20%3D%20p)
And then divide both sides by r:
![w = \dfrac{p}{r}](https://tex.z-dn.net/?f=w%20%3D%20%5Cdfrac%7Bp%7D%7Br%7D)