Answer:
Chrysler building is 918 feet tall and the Washington Monument is 427 feet tall.
Step-by-step explanation:
Let the Chrysler be c feet tall and the Monument m feet tall.
c - m = 491
c - 2m = 64 Subtracting:
-m - (-2m) = 427
m = 427 feet,
and
c - 427 = 491
c = 491 + 427
c = 918 feet.