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iren2701 [21]
3 years ago
14

Bill weighs 120 lbs and is gaining ten lbs each month. Phil weighs 150 lbs and is gaining four lbs each month. How many months w

ill it take for bill to wiegh the same as phil?
Mathematics
2 answers:
vaieri [72.5K]3 years ago
5 0
First, let's write two expressions, letting x= the number of months which have elapsed:

Bill: 120 + 10x
Phil: 150 + 4x

If we set them equal to each other, then solve for x, that will be the number of months where their weights equal each other:

120+10x = 150 + 4x   [starting equation]
-120  -4x    -120 -4x    [ subtract 120 from both sides, and 4x from both sides, to isolate the term with the variable]

<u>6x</u> = <u>30</u>     [divide both sides by 5]
 5      5

x=6. They will weigh the same in six months.

Serggg [28]3 years ago
4 0
130,154
140.158
150.162
160,166
170,170

It will take Bill 5 weeks to be the same weight as phil
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