You use a scale of 1 inch =280 feet to build a model of great pyramid of Giza. The width of the base of the pyramid is 756 feet. What is the width of the model?
(a) 27 in.
(b) 3.4 in.
(c) 3 in.
(d) 2.7 in.

Please help me? I need help as soon as possible. I'm failing in math and I don't understand this problem.