goodyear2013 wrote:

For a cruise, a travel agency charges a weekly rate of $400 plus y dollars for each additional person booked on the same reservation. What is the charge for each additional person?

1: The weekly rate for 5 people sharing the cost of the cruise equally is $1600.

2: The weekly rate per person is 20 percent more expensive for 2 people sharing the cost equally than it is for 4 people sharing the cost equally.

OE:

(1): 400 + 4y =1600 → 4y=1200 → y=300

Sufficient

(2): (400 + y)/2 = 1.2(400 +3y)/4

Sufficient

No Need to calculate the values if you can understand the question.

With one there is only one variable. == y which is 400+4y=1600. So sufficient.

the 2nd statement (400+y)/2=1.2(400+3y)/4 Y can be solved. So D.

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Thanks,

AB

+1 Kudos if you like and understand.