Nora is 50% heavier than Oliver. Shiyun is 30% lighter than Oliver. Nora is 32 kg heavier than Shiyun. What is Oliver's mass?
| Nora |
Oliver |
Shiyun |
| 150% |
100% |
|
| |
100% |
70% |
| 15 u |
10 u |
7 u |
Nora's mass compared to Oliver's mass in percent
= 100% + 50%
= 150%
Shiyun's mass compared to Oliver's mass in percent
= 100% - 30%
= 70%
150% =
150100 =
151070% =
70100 =
710Oliver's mass is the repeated identity. Make Oliver's mass the same.
Oliver's mass = 10 u
Mass that Nora has more than Shiyun
= 15 u - 7 u
= 8 u
8 u = 32
1 u = 32 ÷ 8 = 4
Oliver's mass
= 10 u
= 10 x 4
= 40 kg
Answer(s): 40 kg
