Question

Pennies are packaged 50 in a roll. A mother gave her son 161 pennies for his bank and she had 39 pennies left over. How many rolls of pennies did she use?

Answer 1

$161 + 39 = 200 \\ 200 \div 4 = 50$
so she used 4 rolls of pennies

Answer 2

161 divides by 50 = 3 11/50
3 11/50 + 39/50 = 4
She used 3 11/50 roles for her son and kept 39/50 for her self out of 4 roles