Three friends each have some ribbon. Carol has 90 inches of ribbon, Tino has 4.5 feet of ribbon, and Baxter has 2.5 yards of ribbon. Express the total length of ribbon the three friends have in inches, feet, and yards.

Convert all to inches

note:

1ft=12in

1yd=36in

90 inches=90 in

4.5ft=12*4.5=54in

2.5yd=2.5*36=90in

add

90+54+90=234in

divide by 36 to get rid of yards

6.5yds

6 yards and 0.5 yards left over

1yard=3ft

0.5yd=1.5ft

1ft and 0.5 left over

0.5 times 12=6

6yards, 1 ft, 6 inches