Jeff has a job to tile a room 21 ft x 11 ft with 1 ft. square tiles. how many tiles does he need?

Jeff needs 231 tiles.

Step-by-step explanation:

Hi, to answer this question, first, we have to calculate the area of the room by multiplying its measures:

Area: 21 x 11 = 231 square feet

If each tile measures 1 ft2 , if we multiply the area by the measure of each tile.

231 x 1 = 231 tiles

Jeff needs 231 tiles.

Feel free to ask for more if needed or if you did not understand something.

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour