Bill wieghs 12o and gains 10 per month, his weight can be written as 120 +10m.
Phil's weight can be written as 150 + 4m.
To find the number of months for them to weigh the same, set the equations equal and solve for m.
120 + 10m = 150 +4m
Subtract 4m from each side:
120 + 6m = 150
Subtract 120 from each side:
6m = 30
Divide both sides by 6:
m = 30/6
m = 5
It will take 5 months.
Answer:
5 months
Step-by-step explanation:
120 + 10m = 150 + 4m
Subtract 4m from 10m on both sides ( 4m cancels out which leaves 120 + 6m=150)
Subtract 120 from 150 on both sides (120 cancels out which leaves 6m = 30
6m= 30
Divide 30 by 6 on both sides ( 6 cancels out which leaves 30/6
<u>m=5</u>
