So he needs 6 shirts total, (5×(3/4))+(1×(11/2)) so basically (15/4)+(11/2) to add these, get a common denominator and you'll get your answer...
To make all six shirts, Mark requires 5 1/4 yards of material. As he only has 5 yards, he will need to purchase an additional 1/4 yard. ;
Mark needs a total of 9.25 yards of material to make all six shirts, but he only has 5 yards. Therefore, he needs an additional 4.25 yards. In conclusion, 5 yards is not sufficient for his needs.
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