GMAT 考满分题库

题库 > 数学DS > 题目6chuuk
If Bob, working alone, can paint a certain room in 3 hours, how long does it take Bob and Richard working together to paint the room?

(1) Richard, working alone, can paint the room in 2 hours.

(2) Richard paints at a constant rate that is 50% greater than the rate at which Bob paints.
  • AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
  • BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
  • CBoth statements TOGETHER are sufficient, but NEITHER one ALONE is sufficient.
  • DEACH statement ALONE is sufficient.
  • EStatements (1) and (2) TOGETHER are NOT sufficient.
显示答案
正确答案: D

讨论题目 或 发起提问

|

题目讨论

  • 按热度
  • 按顺序

最新提问