Mr. Jackson bought 1 3/5 lb. of beef. He cooked 3/4 of it for lunch. How much does he have left?
1/4 of it ! Ha ha
1/4 of 1 3/5 is 1/4 x 1 3/5 = 1/4 x 8/5 = 8/20 = 2/5 ths lb left over. (IF he ate what he cooked!)
~jc