Question

A bicyclist was on a three day tour around a lake. On the first day, he rode 78

miles, on the second day he rode 54 miles, and on the third day he rode twice
as far as the second day. Which of the following is a good estimation of how far
he rode in the three days?
A. 190 miles
B. 230 miles
C. 270 miles
D. 310 miles
E. 350 miles​

Answer 1

78 + 54 + 2(54) =
78 + 54 + 108 =
132 + 108 =
240