Answer:
sale price = 408
Step-by-step explanation:
480 * 15/100 = 72
sale price = 480 -72 =408 (ans)
1 = 6
5=8
6=75%?
7=21?
8=21
9=400
10=100
11=40
These are all the one I got the ones with ? At the end I’m not sure about
A mountaineer climbed 1000 feet at a rate of x feet/hour
1000 = x ( t 1 ) eq1
5000 = X ( t 2) eq2 ( he climbed additional at different rate )
the rate was 10 feet / hour less than twice the first rate
X = 2x - 10 eq3
take eq1 and eq 2
( total time = t 1 + t 2 = T)
T = 1000/x + 5000/X
but X = 2x-10
T = 1000/x + 5000/( 2x -10)
T = 1000/x + 5000/( 2(x-5))
T = 1000/x + 2500 / (x-5)
Answer:
1 hour and 42.8 minutes
Step-by-step explanation:
To answer this question let's call 
while it takes Jenna to clean the gutters
Let's call 
while it takes John to clean the gutters
h
h
t = total time
g = job = 1 (clean the gutters)
The speed of each one is:
g/ h
g/h
So:
h
Then, both together paint 
of gutters for each hour.
This means that it takes 
hours to clean the gutters together
Finally cleaning together takes 1,714 hours or also
1 hour and 42.8 minutes
