0.9 of Oscar's money is equal to 70% of Riordan's money. What is the ratio of Oscar's money to Riordan's money?
0.9 of Oscar's money = 910 of Oscar's money
70% of Riordan's money =
70100 of Riordan's money =
710 of Riordan's money
910 Oscar's money is the same as
710 Riordan's money. Make the numerators the same. LCM of 9 and 7 is 63.
9 x 710 x 7 of Oscar's money =
7 x 910 x 9 of Riordan's money
6370 of Oscar's money =
6390 of Riordan's money
Oscar's money : Riordan's money
70 : 90
(÷10)7 : 9
Answer(s): 7 : 9