Nora is 10% heavier than Pierre. Min is 30% lighter than Pierre. Nora is 40 kg heavier than Min. What is Pierre's mass?
| Nora |
Pierre |
Min |
| 110% |
100% |
|
| |
100% |
70% |
| 11 u |
10 u |
7 u |
Nora's mass compared to Pierre's mass in percent
= 100% + 10%
= 110%
Min's mass compared to Pierre's mass in percent
= 100% - 30%
= 70%
110% =
110100 =
111070% =
70100 =
710Pierre's mass is the repeated identity. Make Pierre's mass the same.
Pierre's mass = 10 u
Mass that Nora has more than Min
= 11 u - 7 u
= 4 u
4 u = 40
1 u = 40 ÷ 4 = 10
Pierre's mass
= 10 u
= 10 x 10
= 100 kg
Answer(s): 100 kg
