Sally has three pieces of material. The first piece is 1 yd. 2 ft. 6 in. long, the second piece is 2 yd. 1 ft. 5 in long, and the third piece is 4 yd. 2ft. 8in long. How much material does Sally have?

A. 7 yd. 1 ft. 8 in.
B. 8 yd. 4 ft. 4 in.
C. 8 yd. 11 in.
D. 9 yd. 7 in.
E. 10 yd.

Does anyone know how to calculate above?

Question

Sally has three pieces of material. The first piece is 1 yd. 2 ft. 6 in. long, the second piece is 2 yd. 1 ft. 5 in long, and the third piece is 4 yd. 2ft. 8in long. How much material does Sally have?

A. 7 yd. 1 ft. 8 in. 
B. 8 yd. 4 ft. 4 in. 
C. 8 yd. 11 in. 
D. 9 yd. 7 in. 
E. 10 yd.

Does anyone know how to calculate above?

anonymous · Answer

How many extra inches are there in those three?  Forget the yards and feet, since this is multiple choice.  Add the inches and mod 12 it.