单项选择题

The flat triangular lot depicted above is available for development. If 150 meters, what is the area of the lot in square meters ？（）

A.A
B.B
C.C
D.D
E.E

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单项选择题Is 3x greater than 100 ？（） (1) 9x=36 (2)

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

单项选择题A hotdog vendor sold $45 worth of hotdogs at lunchtime Tuesday. Each hotdog cost $1.50. What percentage of his day’s stock of hotdogs did the vendor sell at lunchtime ？（） (1) The vendor started the day with 120 hotdogs. (2) The vendor sold twice as many hotdogs at dinnertime as he sold at lunchtime.