252, 210 divided by 5 = 42, 42 x 5 = 210 + 42= 252
Answer:
280m
Step-by-step explanation:
Work rate would be (210m)/(45people)(60days)=7/90 m/(people)(day)
7/90 m/(people)(day) * 72people * 50days =280m
Interval Notation of b > 13/9 is [13/9, infinity)