Chuck can make 10 rows out of his 30 pennies, 24 quarters, and 36 nickels. How I determined this answer:
1. Add 30 + 24 + 36 = 90.
2. Divide 90 ÷ 9 (assuming Chuck will have 9 coins per row) = 10 rows.
OR...
Chuck can have 9 rows, with 10 coins per row. How I determined this answer:
1. Add 30 + 24 + 36 = 90.
2. Divide 90 ÷ 10 (assuming that Chuck will have 10 coins per row) = 9 rows.
I hope this helps you! :)