Question

The balance in will's mastercard account grew 2%, to $870, in one month. What was his balance at the beginning of the month?

Answer 1

$870 is 102% of the balance at the beginning of the month
One percent of the balance at the beginning of the month is 870/102
One hundred percent of the balance at the beginning of the month\[=\frac{870}{102}\times 100\]
Can you calculate the answer now?