Question

Two sisters open savings accounts with $60 each that their

grandmother gave them. The first sister adds $20 each month to her
account. The second sister adds $40 every two months to her $60. If
the sisters continue to make deposits at the same rate, when will they
have the same amount of money?

Answer 1

After two months because in two months, the first sister would have added $40 in total to her account. It is given that after two months, the second sister would make her first deposit of $40.