if 4/5 yd costs ....................................5.60
0.8 yd..............................................5.60
7 3/4=7.75 yd
we rewrite again
0.8 yd.............................................5.60 dollars
1 yd..............................................?
1 yard=5.60/0.8= 7 dollars
cost=7*7.75=54.25 dollars
