Jen is 40% heavier than Vincent. Risa is 30% lighter than Vincent. Jen is 14 kg heavier than Risa. What is Vincent's mass?
| Jen |
Vincent |
Risa |
| 140% |
100% |
|
| |
100% |
70% |
| 14 u |
10 u |
7 u |
Jen's mass compared to Vincent's mass in percent
= 100% + 40%
= 140%
Risa's mass compared to Vincent's mass in percent
= 100% - 30%
= 70%
140% =
140100 =
141070% =
70100 =
710Vincent's mass is the repeated identity. Make Vincent's mass the same.
Vincent's mass = 10 u
Mass that Jen has more than Risa
= 14 u - 7 u
= 7 u
7 u = 14
1 u = 14 ÷ 7 = 2
Vincent's mass
= 10 u
= 10 x 2
= 20 kg
Answer(s): 20 kg
