Kelly joins Powerhouse Gym. The cost is $30 per month and a one-time $100 joining fee. Lisa joins MegaMuscle Gym for $35 per month and a $50 joining fee. In how many months will Lisa have paid more than Kelly?
A) 10 months
B) 11 months
C) 8 months
D) 2 months

100 + 30x = 50 + 35x.
-50 -30x -50 -30x

50 = 5x

10 = x

At ten months they would have paid the same amount so at 11 months, Lisa would pay more than Kelly.

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Аноним Аноним · Answer 2 · 2017-05-22T05:34:42+02:00

Аноним Аноним

22-05-2017

B- 11 months , Kelly would pay $430 and Lisa would pay $435

30 times 11 = 330 + 100= 430 -Kelly

35 times 11=385 + 50= 435

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Kelly joins Powerhouse Gym. The cost is $30 per month and a one-time $100 joining fee. Lisa joins MegaMuscle Gym for $35 per month and a $50 joining fee. In how many months will Lisa have paid more than Kelly? A) 10 months B) 11 months C) 8 months D) 2 months

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Kelly joins Powerhouse Gym. The cost is $30 per month and a one-time $100 joining fee. Lisa joins MegaMuscle Gym for $35 per month and a $50 joining fee. In how many months will Lisa have paid more than Kelly?
A) 10 months
B) 11 months
C) 8 months
D) 2 months