Fong's family bought a large sack of rice. They consumed 7/20 last month and 8/11 of the remainder this month. What fraction of rice has been consumed and remains?

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.