Answer:
It will take rob 7 minutes to climb the stairs tomorrow.
Step-by-step explanation:
1000/25=40
Rob climbed 40 stairs per minute
280/40=7
Therefore, it will take rob 7 minutes to climb 280 stairs.
x-3/10 for x=1/2
1/2-3/10
=2/10
=1/5
Add the equations to eliminate x
Let's go through each of these statements
1) Add the equations to eliminate x
y = x + 10
+
y = -x + 3
_______
2y = 13
This works!
his monthly income is 60000
