Risa baked 397 cookies. She ate 6
r of them and divided the remainder equally among her 5 friends.
- Find the number of cookies each of her friends received in terms of r?
- If r = 12, how many cookies did each of her friends receive?
(a)
Number of cookies left after Risa ate = 397 - 6
rNumber of cookies that each of her friends received =
397 - 6r5 (b)
Number of cookies that each of her friends received
= (397 - (6 x 12)) ÷ 5
= (397 - 72) ÷ 5
= 325 ÷ 5
= 65
Answer(s): (a)
397 - 6r5; (b) 65