Cara has $600 in her savings account and she deposits $30 every week. Logan has $900 in his savings account and withdraws $10 a week. How many weeks will it take until Cara has more money?

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy