Question

Three boxes are stacked one on top of the other. one box is 2 feet 7 inches tall, one is 3 feet 11 inches tall, and one is 6 feet 9 inches tall. how high is the stack?

Answer 1

2 ft   7 in
3 ft  11 in
6 ft  9 in
-----------------add
11 ft  27 in........and since 1 ft = 12 inches, then 27 inches = 2 ft 3 inches

so it would become : 13 ft  3 inches <==