Jaslyn is 25% heavier than Eric. Usha is 50% lighter than Eric. Jaslyn is 30 kg heavier than Usha. What is Eric's mass?
| Jaslyn |
Eric |
Usha |
| 125% |
100% |
|
| |
100% |
50% |
| 5 u |
4 u |
2 u |
Jaslyn's mass compared to Eric's mass in percent
= 100% + 25%
= 125%
Usha's mass compared to Eric's mass in percent
= 100% - 50%
= 50%
125% =
125100 =
5450% =
50100 =
24Eric's mass is the repeated identity. Make Eric's mass the same.
Eric's mass = 4 u
Mass that Jaslyn has more than Usha
= 5 u - 2 u
= 3 u
3 u = 30
1 u = 30 ÷ 3 = 10
Eric's mass
= 4 u
= 4 x 10
= 40 kg
Answer(s): 40 kg
