Problem
Suppose that hot dogs come in packs of 7 and buns come in packs of 9 . Goran bought the same number of hot dogs as buns. It was the least number of each for which this was possible. Answer the following questions. How many packs of hot dogs did he buy? חpacks How many packs of buns did he buy? חpacks How many hot dogs did he buy? \( \square \) hot dogs \[ \times 5 \] Explanation Check
Solution
Step 1 ：\text{Find the least common multiple of 7 and 9: } \text{lcm}(7, 9) = 63
Step 2 ：\text{Calculate packs of hot dogs: } \frac{63}{7} = 9 \text{ packs}
Step 3 ：\text{Calculate packs of buns: } \frac{63}{9} = 7 \text{ packs}
Step 4 ：\text{Find the total number of hot dogs: } 9 \times 7 = 63 \text{ hot dogs}
