Victoria is 40% heavier than Albert. Linda is 20% lighter than Albert. Victoria is 12 kg heavier than Linda. What is Albert's mass?
| Victoria |
Albert |
Linda |
| 140% |
100% |
|
| |
100% |
80% |
| 7 u |
5 u |
4 u |
Victoria's mass compared to Albert's mass in percent
= 100% + 40%
= 140%
Linda's mass compared to Albert's mass in percent
= 100% - 20%
= 80%
140% =
140100 =
7580% =
80100 =
45Albert's mass is the repeated identity. Make Albert's mass the same.
Albert's mass = 5 u
Mass that Victoria has more than Linda
= 7 u - 4 u
= 3 u
3 u = 12
1 u = 12 ÷ 3 = 4
Albert's mass
= 5 u
= 5 x 4
= 20 kg
Answer(s): 20 kg
