0.1 of Pierre's money is equal to 90% of Ben's money. What is the ratio of Ben's money to Pierre's money?
0.1 of Pierre's money = 110 of Pierre's money
90% of Ben's money =
90100 of Ben's money =
910 of Ben's money
110 Pierre's money is the same as
910 Ben's money. Make the numerators the same. LCM of 1 and 9 is 9.
1 x 910 x 9 of Pierre's money =
9 x 110 x 1 of Ben's money
990 of Pierre's money =
910 of Ben's money
Ben's money : Pierre's money
10 : 90
(÷10)1 : 9
Answer(s): 1 : 9