PSLERiordan, David and Nora shared $870. David received 30% more than Riordan while Nora received 40% less than Riordan. How much more than Nora did David receive?
Riordan |
David |
Nora |
Total |
100% |
130% |
|
|
100% |
|
60% |
|
10 u |
13 u |
6 u |
29 u |
Riordan : David : Nora
100 : 130 : 60
(÷10)10 : 13 : 6
Riordan is the repeated identity.
Total amount that they shared
= 10 u + 13 u + 6 u
= 29 u
29 u = 870
1 u = 870 ÷ 29 = 30
Amount that David received more than Nora
= 13 u - 6 u
= 7 u
= 7 x 30
= $210
Answer(s): $210