How much part can sally paint in an hour ?
a ÷ 7 = a/7
And what about Steve ?
a ÷ 9 = a/9
Where, a is the total area of the room.
So, let the time taken by both of them to paint the room together be 't'
So,
t(a/7 + a/9) = a
t(9a/63 + 7a/63) = a
t(16a/63) = a
t = 63/16 ≈ 4 hr
Answer:
$6.75
Step-by-step explanation:
15% of 45 = $6.75
Answer:
or around 57.88
Step-by-step explanation:
We can find the base length by using the formula for the area of a triangle.
Plug in the values that we know, the area and the height, and solve for 
.
![b=\frac{984}{17}So the base is [tex]\frac{984}{17}](https://tex.z-dn.net/?f=b%3D%5Cfrac%7B984%7D%7B17%7D%3C%2Fp%3E%3Cp%3E%3C%2Fp%3E%3Cp%3ESo%20the%20base%20is%20%5Btex%5D%5Cfrac%7B984%7D%7B17%7D)
or about 57.88 if you round to the nearest hundredth.
x + y = 4,000
0.1x + 0.04y = 352
Product A represents x and product B represents y. The first equation is the total number of items the store owner buys. The second equation is cost per item for both products. The above system of equations can be used to determine how much product A and product B the store owner bought.
