Divide total bought by number of people first:
680 / 45 = 15.111
round up to 16. Multiply 16 by 45:
45 x 16 = 720
He should have bought 720 pieces. Now by Tracy to find how many more pieces:
720 - 680 = 40
He should have bought 40 more pieces.
Answer:
multiply
Step-by-step explanation:
1. 245=5x7x7
=7² x5
2. 250=5x5x10
=5²x10
3. 225=9x5x5
=5²x9
4 3/4 - 4 1/3
= 4 9/12 - 4 4/12
= 5/12 <==== extra cup put in
