1.5 yards of ribbon if each ribbon costs 10 cents per foot, what is total cost of ribbon in dollars

In this question, importance has to be given to all the information's provided. Based on these information's the answer to the question can be reached.
Total length of ribbon = 1.5 yards
1 yard = 3 foot
1.5 yards = 3 * 1.5 feet
                = 4.5 feet
So the total length of the ribbon is 4.5 feet.
Now
Cost of 1 foot of ribbon = 10 cents
Then
Cost of 4.5 feet of ribbon = 10 * 4.5 cents
                                         = 45 cents.
                                         = 45/100 dollars
                                         = 0.45 dollars
So the cost of the total ribbon in dollars is $0.45.