Jade is 20% heavier than Neave. Joelle is 40% lighter than Neave. Jade is 21 kg heavier than Joelle. What is Neave's mass?
| Jade |
Neave |
Joelle |
| 120% |
100% |
|
| |
100% |
60% |
| 6 u |
5 u |
3 u |
Jade's mass compared to Neave's mass in percent
= 100% + 20%
= 120%
Joelle's mass compared to Neave's mass in percent
= 100% - 40%
= 60%
120% =
120100 =
6560% =
60100 =
35Neave's mass is the repeated identity. Make Neave's mass the same.
Neave's mass = 5 u
Mass that Jade has more than Joelle
= 6 u - 3 u
= 3 u
3 u = 21
1 u = 21 ÷ 3 = 7
Neave's mass
= 5 u
= 5 x 7
= 35 kg
Answer(s): 35 kg
