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