Roy has a 15 feet long steel rod. He plans to cut the rod into pieces that are each foot long. How many pieces can he cut?

The correct answer is: 9

The number of pieces he can cut is equal to the total length of the steel rod divided by length of each piece he wish to cut.
Here total length = 15 feet and length of each piece =  foot
So, Number of pieces =

When there is a fraction in the denominator then we multiply the reciprocal of the denominator with the numerator to find the value of the problem.
(Reciprocal of is )
= 9 pieces
Therefore the total number of pieces he can cut is 9 pieces.