half of Isaiah's money is equal to 2/3 of bob's money . isaiah has $15 more than bob. how much money do they have altogether

Answer 1

I/2 = 2B/3

I=15+B

(15+B)/2 = 2B/3

multiply both sides by 6

45 + 3B = 4B

B = $45

I=$60

Together they have 45+60 = $105