Answer:
0.27 cubic feet of mulch is remaining
Step-by-step explanation:
Quantity in the bag = 2 7/16 cubic feet of mulch
Quantity used = 8/9 of the bag in his garden
Mulch used = 8/9 of 2 7/16
= 8/9 × 39/16
= 1/9 × 39/2
= 39/18
= 2 3/8 used
Total mulch left = Total mulch in the bag - mulch used
= 2 7/16 - 2 3/8
= 39/16 - 39/18
= 702-624/288
= 78/288
= 0.27 cubic feet of mulch is remaining
C