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