Combine like terms
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Let's say both had an original amount of "a".
then Liam deposited 140, so it became a + 140.
then Charlie added 5% of "a" to "a", well, 5% of anything is just (5/100)*anything, so 5% of "a" is just (5/100) *a or 0.05a.
then they checked their amounts and both were equal, what the? let's check.
then Liam deposited 140, so it became a + 140.
then Charlie added 5% of "a" to "a", well, 5% of anything is just (5/100)*anything, so 5% of "a" is just (5/100) *a or 0.05a.
then they checked their amounts and both were equal, what the? let's check.