Question

Kathy saves $1 on the first day, $2 on the second day, $3 on the third day and so

on, saving an extra $1 on each subsequent day. On which day will she have over
$100 in total?

Answer 1

3 moths and 10 days

Explanation:

on each day she gets 1$ that means

1 month = 30 days

e.g. 3 6 9 30 60 90

means 90 days if we add also 1 month it will be 120 days

so 90 + 10 = 100

thats why 3 months and 10 day :)