Kylie is 40% heavier than Rael. Shiyun is 30% lighter than Rael. Kylie is 49 kg heavier than Shiyun. What is Rael's mass?
| Kylie |
Rael |
Shiyun |
| 140% |
100% |
|
| |
100% |
70% |
| 14 u |
10 u |
7 u |
Kylie's mass compared to Rael's mass in percent
= 100% + 40%
= 140%
Shiyun's mass compared to Rael's mass in percent
= 100% - 30%
= 70%
140% =
140100 =
141070% =
70100 =
710Rael's mass is the repeated identity. Make Rael's mass the same.
Rael's mass = 10 u
Mass that Kylie has more than Shiyun
= 14 u - 7 u
= 7 u
7 u = 49
1 u = 49 ÷ 7 = 7
Rael's mass
= 10 u
= 10 x 7
= 70 kg
Answer(s): 70 kg
