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mindruna
- Junior | Next Rank: 30 Posts
- Posts: 27
- Joined: Mon Mar 19, 2007 6:23 pm
- Location: Cambridge, MA
Problem 2)
1) x=y+1
This means that x and y are consecutive positive integers adding up to 77. The only consecutive integers that can do this are 38 and 39. Sufficient.
2)X and Y have the same tens digit.
The only numbers that add up to 77 and fit this description are also 38 and 39.
Sufficient.
I think the answer's D.
1) x=y+1
This means that x and y are consecutive positive integers adding up to 77. The only consecutive integers that can do this are 38 and 39. Sufficient.
2)X and Y have the same tens digit.
The only numbers that add up to 77 and fit this description are also 38 and 39.
Sufficient.
I think the answer's D.
