went on a diet 6 months ago

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went on a diet 6 months ago

by sanju09 » Thu Jan 14, 2010 1:01 am
Joe went on a diet 6 months ago when he weighed 222 pounds. If he now weighs 198 pounds and continues to lose at the same average monthly rate, in approximately how many months will he weigh 180 pounds?
(A) 3
(B) 3 ½
(C) 4
(D) 4 ½
(E) 5
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by truplayer256 » Thu Jan 14, 2010 4:18 am
John loses x pounds every month.

222-6x=198

-6x=-24

x=4

198-4y=180

y=18/4 or 9/2 months

D