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