A) 3. B) 4. C) 5. D) 6
A) About 5 minutes. B) About 10 minutes. C) About 15 minutes. D) About 20 minutes
A) 430. B) 440. C) 450. D) 460.
A) 19. B) 80. C) 90. D) 100.
A) 1,013. B) 1,030. C) 1,300. D) 1,003.