Shiyun is 50% heavier than Oscar. Kathy is 40% lighter than Oscar. Shiyun is 45 kg heavier than Kathy. What is Oscar's mass?
| Shiyun |
Oscar |
Kathy |
| 150% |
100% |
|
| |
100% |
60% |
| 15 u |
10 u |
6 u |
Shiyun's mass compared to Oscar's mass in percent
= 100% + 50%
= 150%
Kathy's mass compared to Oscar's mass in percent
= 100% - 40%
= 60%
150% =
150100 =
151060% =
60100 =
610Oscar's mass is the repeated identity. Make Oscar's mass the same.
Oscar's mass = 10 u
Mass that Shiyun has more than Kathy
= 15 u - 6 u
= 9 u
9 u = 45
1 u = 45 ÷ 9 = 5
Oscar's mass
= 10 u
= 10 x 5
= 50 kg
Answer(s): 50 kg
