0.7 of Billy's money is equal to 90% of Owen's money. What is the ratio of Owen's money to Billy's money?
0.7 of Billy's money = 710 of Billy's money
90% of Owen's money =
90100 of Owen's money =
910 of Owen's money
710 Billy's money is the same as
910 Owen's money. Make the numerators the same. LCM of 7 and 9 is 63.
7 x 910 x 9 of Billy's money =
9 x 710 x 7 of Owen's money
6390 of Billy's money =
6370 of Owen's money
Owen's money : Billy's money
70 : 90
(÷10)7 : 9
Answer(s): 7 : 9