A total of 18.6 cu yd of concrete is required for pouring a foundation. The ratio of cent to sand the graval for this aplication is 1:2:4,and the amount of these components must be 1 1/2 times tje volume of concrete needed. How many cubic yards of each component are needed.

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.