liz needs15 pieces of string each 1/2 of a inch long she cut a 6 inch piece of string into pieces that are each 1/2 of an inch long how many more pieces of string does she need
we know that
she cut a 6 inch piece of string into pieces that are each 1/2 of an inch long
so
the total pieces are
6/(1/2)=12 pieces each 1/2 of a inch
that means
She need
15-12=3 pieces each 1/2 of a inch
therefore
